OpenVPN Change Log

 Copyright (C) 2002-2018 OpenVPN Inc <sales@openvpn.net>

 2016.12.16 -- Version 2.4_rc2
 David Sommerseth (9):
       Fix wrong configure.ac parsing of --enable-async-push
       Changes: Further improve systemd unit file updates
       systemd: Intermediate --chroot fix with the new sd_notify() implementation
       Further enhance async-push feature description
       Changes.rst: Mainatiner update on C99
       dev-tools: Add reformat-all.sh for code style unification
       The Great Reformatting - first phase
       Merge 'reformatting' branch into master
       auth-gen-token: Hardening memory cleanup on auth-token failuers
 
 Gert Doering (1):
       Refactor setting close-on-exec for socket FDs
 
 Lev Stipakov (2):
       Arm inotify only in server mode
       Add "async push" feature to Changes.rst
 
 Magnus Kroken (1):
       mbedtls: include correct net/net_sockets header according to version
 
 Selva Nair (2):
       Correctly state the default dhcp server address in man page
       Unhide a line in man page by fixing a typo
 
 Steffan Karger (4):
       Fix (and cleanup) crypto flags in combination with NCP
       Deprecate --no-iv
       man: mention that --ecdh-curve does not work on mbed TLS builds
       Don't reopen tun if cipher changes
 
 

 2016.12.01 -- Version 2.4_rc1
 Antonio Quartulli (1):
       reload CRL only if file was modified
 
 Christian Hesse (3):
       update year in copyright message
       Use systemd service manager notification
       Refuse to daemonize when running from systemd
 
 Gert Doering (1):
       Fix windows path in Changes.rst
 
 Samuli Seppänen (1):
       Mention that OpenVPN 2.4 requires Windows Vista or higher
 
 Selva Nair (4):
       Map restart signals from event loop to SIGTERM during exit-notification wait
       When parsing '--setenv opt xx ..' make sure a third parameter is present
       Force 'def1' method when --redirect-gateway is done through service
       Do not restart dns client service as a part of --register-dns processing
 
 Steffan Karger (4):
       tls_process: don't set variable that's never read
       Unconditionally enable TLS_AGGREGATE_ACK
       Clean up format_hex_ex()
       Introduce and use secure_memzero() to erase secrets
 
 

 2016.11.24 -- Version 2.4_beta2
 Arne Schwabe (5):
       Document that tls-crypt also supports inline
       Fix warning that RAND_bytes is undeclared
       Remove compat-stdbool.h.
       Fix various compiler warnings
       Handle DNS6 option on Android
 
 David Sommerseth (2):
       Changes.rst: Fixing wrong formatting
       Document the --auth-token option
 
 Gert Doering (2):
       Remove remaining traces of compat-stdbool.h
       Stub implementation of "--dhcp-option DNS6 <v6addr>"
 
 Selva Nair (3):
       Do not set ipv6 address if '--ip-win32 manual' is used
       Handle --dhcp-option DNS6 on Windows using netsh
       Set IPv6 DNS servers using interactive service
 
 Steffan Karger (6):
       multi_process_float: revert part of c14c4a9e
       --tls-crypt fixes
       Change cmocka remote to use https in stead of git protocol
       generate_key_expansion: make assumption explicit, use C99 features
       Poor man's NCP for non-NCP peers
       Refactor data channel key generation API
 
 

 2016.11.17 -- Version 2.4_beta1
 Arne Schwabe (1):
       Make Changes.rst nicer for 2.4 release
 
 David Sommerseth (16):
       Update .mailmap to unify and clean up odd names and e-mail addresses
       cleanup: Remove NOP code sections in ssl.c:tls_process()
       Remove last rest of INSTALL-win32.txt references
       auth-gen-token: Add --auth-gen-token option
       auth-gen-token: Generate an auth-token per client
       auth-gen-token: Push generated auth-tokens to the client
       auth-gen-token: Authenticate generated auth-tokens when client re-authenticates
       Fix builds with --disable-crypto
       man: Improve the --keepalive section
       console: Fix compiler warning
       systemd: Improve the systemd unit files
       tun: Fix compiler warnings
       file checks: Merge warn_if_group_others_accessible() into check_file_access()
       tun: Fix weird commit error causing a double assignment
       options: Remove --tls-remote
       Remove unused variable in argv_printf_arglist()
 
 Gert Doering (10):
       openvpn version line: remove [IPv6], add [AEAD] if available
       clean up *sig_info handling in link_socket_init_phase2()
       check c->c2.link_socket before calling do_init_route_ipv6_list()
       Check previously-unchecked buf_alloc_write() call in crypto self-test.
       Fix potential division by zero in shaper_reset()
       Repair topology subnet on FreeBSD 11
       Repair topology subnet on OpenBSD
       Add in_port_t check to configure.ac
       Fix compilation on MinGW with -std=c99
       Replace WIN32 by _WIN32
 
 Heiko Hund (4):
       put argv_* functions into own file, add unit tests
       Remove unused and unecessary argv interfaces
       remove unused system_str from struct argv
       Factor out %sc handling from argv_printf()
 
 Lev Stipakov (1):
       Drop recursively routed packets
 
 Samuli Seppänen (6):
       Remove INSTALL-win32.txt that is now hosted in openvpn-build
       Fix update_t_client_ips.sh for out of tree builds
       Make sure that all relevant files under test go to release tarballs
       Allow passing extra arguments to fping/fping6 in t_client.rc
       Prevent generation of duplicate EXPECT_IFCONFIG entries
       Fix a logic problem in handling of --up scripts in t_client.sh
 
 Selva Nair (2):
       Support --block-outside-dns on multiple tunnels
       Unbreak windows build
 
 Steffan Karger (19):
       Fix use-after-free bug in prepare_push_reply()
       Remove verbose msg() from send_push_reply()
       Limit --reneg-bytes to 64MB when using small block ciphers
       Add a revoked cert to the sample keys
       Fix --tls-version-max in mbed TLS builds
       Don't deference type-punned pointers
       Fix builds on compilers without anonymous union support
       Refactor static/tls-auth key loading
       Add missing includes in error.h
       Make argv unit tests obey {MBEDTLS, OPENSSL}_{LIBS, CFLAGS}
       Move private file access checks to options_postprocess_filechecks()
       Deprecate key-method 1
       Refactor CRL handling
       Remove unneeded check for extra_certs_file_inline
       Fix missing return value checks in multi_process_float()
       Restore pre-NCP cipher options on SIGUSR1
       Remove unused variables from do_init_crypto_static()
       Add control channel encryption (--tls-crypt)
       Add --tls-crypt unit tests
 
 

 2016.10.19 -- Version 2.4_alpha2
 
 David Sommerseth (1):
       Update .mailmap to unify and clean up odd names and e-mail addresses
 
 Steffan Karger (1):
       Fix use-after-free bug in prepare_push_reply()
 
 

 2016.10.17 -- Version 2.4_alpha1
 
 Adriaan de Jong (2):
       Fixed a bug where PolarSSL gave an error when using an inline file tag.
       Fix --show-pkcs11-ids (Bug #239)
 
 Alexander Pyhalov (1):
       Default gateway can't be determined on illumos/Solaris platforms
 
 Alon Bar-Lev (1):
       pkcs11: use generic evp key instead of rsa
 
 Andris Kalnozols (3):
       Fix some typos in the man page.
       Do not upcase x509-username-field for mixed-case arguments.
       extract_x509_extension(): hide status message during normal operation.
 
 Arne Schwabe (100):
       Document man agent-external-key
       Options parsing demands unnecessary configuration if PKCS11 is used
       Error message if max-routes used incorrectly
       Properly require --key even if defined(MANAGMENT_EXTERNAL_KEY)
       Remove dnsflags_to_socktype, it is not used anywhere
       Fix the proto is used inconsistently warning
       Remove dead code path and putenv functionality
       Remove unused function xor
       Move static prototype definition from header into c file
       Remove unused function no_tap_ifconfig
       Add the client id (CID) to the output of the status command
       Print client id only if compiled with man agent support. Otherwise print an empty string.
       Allow routes to be set before opening tun, similar to ifconfig before opening tun
       Add ability to send/receive file descriptors via management interface
       Android platform specific changes.
       Emulate persist-tun on Android
       Document the Android implementation in OpenVPN
       Only print script warnings when a script is used. Remove stray mention of script-security system.
       Fix #ifdefs for P2MP_SERVER
       Move settings of user script into set_user_script function
       Move checking of script file access into set_user_script
       Fix another #ifdef/#if P2MP_SERVER
       PATCHv3 Remove unused variables or put them to the defines they are being used in
       Add support of utun devices under Mac OS X
       Add support to ignore specific options.
       Add a note what setenv opt does for OpenVPN < 2.3.3
       Implement custom HTTP header for http-proxy, and always send user-agent:
       Add reporting of UI version to basic push-peer-info set.
       Change the type of all ports in openvpn to const char* and let getaddrinfo resolve the port together with the hostname.
       Fix compile error in ssl_openssl introduced by polar external-management patch
       Simplify print_sockaddr_ex function, merge duplicate ipv4/ipv6 logic.
       Split the PROTO_UDP_xx options into AF_INET/AF_INET6 and PROTO_TCP/PROTO_UDP part.
       Fix two instances of asserting AF_INET
       Fix assertion when SIGUSR1 is received while getaddrinfo is successful
       Split link_socket_init_phase1 and link_socket_init_phase2 into smaller more managable/readable functions. No functional changes
       Change proto_remote() function to return a constant string
       Remove the ip-remote-hint option.
       change the type of 'remote' to addrinfo*, and rename to 'remote_list'.
       When resolving fails print the error message from socket layer
       Implement dual stack client support for OpenVPN
       Move ASSERT so external-key with OpenSSL works again
       Implement listing on IPv4/IPv6 dual socket on all platform
       Add warning for using connection block variables after connection blocks
       Update IPv6 related readme files
       Introduce safety check for http proxy options
       Fix warning for max-routes: do not quit when parsing an old configuration. Format the message to be more like the other deprecated options
       Fix connecting to localhost on Android
       Move the initialization of the environment to the top so c2.es is initialized
       Workaround broken Android 4.4 VpnService API for persist-tun mode
       Implement an easy parsable log output that allows access to flags of the log message
       Introduce an option to resolve dns names in advance for --remote, --local and --http-proxy
       Fix for server selecting address family
       Don't show the connection profile store in options->ce if there is a connection_list defined.
       Add gateway and device to android control messages
       Clean up of socket code.
       Fix assert when using port-share
       Work around Solaris getaddrinfo() returing ai_protocol=0
       Fix man page and OSCP script: tls_serial_{n} is decimal
       Remove ENABLE_BUFFER_LIST
       Fix server routes not working in topology subnet with --server [v3]
       Always enable http-proxy and socks-proxy
       Remove deprecated --max-routes option from manual
       Add documentation for PERSIST_TUN_ACTION (Android specific)
       Remove possibility of using --tls-auth with non OpenVPN Static key files
       Remove unused function sock_addr_set
       Document the default for tls-cipher.
       Report missing end-tags of inline files as errors
       Fix commit e473b7c if an inline file happens to have a line break exactly at buffer limit
       Show extra-certs in current parameters, fix clang warning and logic error in preresolve
       Remove unused function h_errno_msg
       Add support for requesting the fd again to rebind to the next interface.
       Don't redirect the gateway on Android even if requested
       Fix loglevel of protect socket message
       Extend network-change command to allow reprotecting on the same network (for short connection losses)
       Use pseudo gw as default gw on Android as a workaround for not being able to read /proc/net/route
       Remove #ifdefs for client nat support.
       Do not install a host route for the VPN on Android
       Fix commit c67acea173dc9ee37220f5b9ff14ede081181992
       Do not set the buffer size by default but rely on the operation system default.
       Start Changes.rst that lists changes in 2.4.0
       Remove --enable-password-save option
       Reflect enable-password-save change in documentation
       Also remove second instance of enable-password-save in the man page
       Detect config lines that are too long and give a warning/error
       Implement the compression V2 data format for stub and lz4.
       Fix assert when comp is called with unknown algorithm, always call comp init method
       Ignore stamp-h2 we generate during build process
       Implement inlining of crl files
       Complete push-peer-info documentation and allow IV_PLAT_VER for other platforms than Windows if the client UI supplies it.
       Remove http-proxy-timeout, socks timeout and set default of server-poll-timeout to 120s
       Add documentation for http-proxy-user-pass option
       Remove http-proxy-retry and socks-proxy-retry.
       Update android documentation to match source code
       Use AES ciphers in our sample configuration files and add a few modern 2.4 examples
       Fix ENABLE_CRYPTO_OPENSSL set to YES even with --disable-crypto set
       Prefer RECVDSTADDR to PKTINFO for IPv4 in OS X since it actually works (unlike PKTINFO)
       Incorporate the Debian typo fixes where appropriate and make show_opt default message clearer
       Enable TCP non-linear packet ID
       Change the hold command to communicate the time that OpenVPN would wait to the UI.
       Remove tun-ipv6 Option. Instead assume that IPv6 is always supported.
 
 Boris Lytochkin (1):
       Log serial number of revoked certificate
 
 Christian Hesse (1):
       fix build with automake 1.13(.1)
 
 Christian Niessner (1):
       Fix corner case in NTLM authentication (trac #172)
 
 Christos Trochalakis (1):
       Adjust server-ipv6 documentation
 
 Cristian Rodriguez (1):
       Use SSL_MODE_RELEASE_BUFFERS if available
 
 Daniel Hahler (1):
       options: fix option check for "plugin"
 
 Daniel Kubec (4):
       Added support for TLS Keying Material Exporters [RFC-5705]
       Added document for TLS Keying Material Exporters [RFC-5705]
       sample-plugin: TLS Keying Material Exporter [RFC-5705] demonstration plug-in
       Fix buffer size parameter for exported keying material.
 
 David Sommerseth (44):
       Make git ignore some more files
       Remove the support for using system() when executing external programs or scripts
       Fix double-free issue in pf_destroy_context()
       Reset the version.m4 version for the master branch
       Avoid recursion in virtual_output_callback_func()
       The get_default_gateway() function uses warn() instead of msg()
       Improve the git revision tracking
       man page: Update man page about the tls_digest_{n} environment variable
       Remove the --disable-eurephia configure option
       plugin: Extend the plug-in v3 API to identify the SSL implementation used
       autoconf: Fix typo
       t_client.sh: Check for fping/fping6 availability
       t_client.sh: Write errors to stderr and document requirements
       t_client.sh: Add prepare/cleanup possibilties for each test case
       Fix file checks when --chroot is being used
       Adjusted autotools files to build more cleanly on newer autoconf/automake versions
       Improve error reporting on file access to --client-config-dir and --ccd-exclusive
       Don't let openvpn_popen() keep zombies around
       Don't try to use systemd-ask-password if it is not available
       Clean up the pipe closing in openvpn_popen()
       Add systemd unit file for OpenVPN
       systemd: Use systemd functions to consider systemd availability
       systemd: Reworked the systemd unit file to handle server and client configs better
       autotools: Fix wrong ./configure help screen default values
       down-root plugin: Replaced system() calls with execve()
       down-root: Improve error messages
       plugin, down-root: Fix compiler warnings
       sockets: Remove the limitation of --tcp-nodelay to be server-only
       plugins, down-root: Code style clean-up
       Provide compile time OpenVPN version information to plug-ins
       Provide OpenVPN runtime version information to plug-ins
       Avoid partial authentication state when using --disabled in CCD configs
       Only build and run cmocka unit tests if its submodule is initialized
       Another fix related to unit test framework
       Remove NOP function and callers
       Revert "Drop recursively routed packets"
       Fix client connection instant timeout
       t_client.sh: Make OpenVPN write PID file to avoid various sudo issues
       t_client.sh: Add support for Kerberos/ksu
       t_client.sh: Improve detection if the OpenVPN process did start during tests
       Rework the user input interface to make it more modular
       Re-implement the systemd support using the new query user API
       systemd: Do not mask usernames when querying for it via systemd-ask-password
       Move memcmp_constant_time() to crypto.h
 
 David Woodhouse (2):
       pkcs11: Load p11-kit-proxy.so module by default
       Make 'provider' option to --show-pkcs11-ids optional where p11-kit is present
 
 Davide Brini (2):
       Provide more accurate warning message
       Document authfile for socks server
 
 Dmitrij Tejblum (1):
       Fix is_ipv6 in case of tap interface.
 
 Dorian Harmans (1):
       Add CHACHA20-POLY1305 ciphersuite IANA name translations.
 
 Felix Janda (1):
       Use OPENVPN_ETH_P_* so that <netinet/if_ether.h> is unecessary
 
 Fish (1):
       Add lz4 support to MSVC.
 
 Gert Doering (110):
       Implement --mssfix handling for IPv6 packets.
       Fix option inconsistency warnings about "proto" and "tun-ipv6"
       Fix parameter type for IP_TOS setsockopt on non-Linux systems.
       Fix client crash on double PUSH_REPLY.
       Update README.IPv6 to match what is in 2.3.0
       Repair "tcp server queue overflow" brokenness, more <stdbool.h> fallout.
       Permit pool size of /64.../112 for ifconfig-ipv6-pool
       Add MIN() compatibility macro
       Fix directly connected routes for "topology subnet" on Solaris.
       Print "Virtual IPv6 Address" on management interface queries [v4]
       Use constrain_int() instead of MIN()+syshead.c compat definition - v2.
       Fix NULL-pointer crash in route_list_add_vpn_gateway().
       Fix usage of 'compression ...' from global config.
       Make push-peer-info visible in "normal" per-instance environment.
       Fix problem with UDP tunneling due to mishandled pktinfo structures.
       Improve documentation and help text for --route-ipv6.
       Fix argument type warning introduced by http extra proxy header patch.
       Fix IPv6 examples in t_client.rc-sample
       Fix slow memory drain on each client renegotiation.
       t_client.sh: ignore fields from "ip -6 route show" output that distort results.
       Fix IPv6_V6ONLY logic.
       Implement LZ4 compression.
       Provide LZ4 sources in src/compat/ and use if no system lz4 library found.
       Document "lz4" argument to "compress" config option.
       Make code and documentation for --remote-random-hostname consistent.
       Reduce IV_OPENVPN_GUI_VERSION= to IV_GUI_VER=
       remove some 'unused variable' warnings
       Cleanup ir6->netbits handling.
       Document issue with --chroot, /dev/urandom and PolarSSL.
       Rename 'struct route' to 'struct route_ipv4'
       Replace copied structure elements with including <net/route.h>
       Add "test-driver" and "compile" to .gitignore
       Fix crash when using --inetd.
       IPv6 address/route delete fix for Win8
       Add SSL library version reporting.
       Minor t_client.sh cleanups
       Repair --multihome on FreeBSD for IPv4 sockets.
       Rewrite manpage section about --multihome
       More IPv6-related updates to the openvpn man page.
       Conditionalize calls to print_default_gateway on !ENABLE_SMALL
       Merge get_default_gateway() implementation for all 4+1 BSD variants.
       Drop incoming fe80:: packets silently now.
       Recognize AIX, define TARGET_AIX
       Add tap driver initialization and ifconfig for AIX.
       implement adding/deleting routes on AIX, for IPv4 and IPv6
       Make t_client.sh work on AIX.
       Fix t_lpback.sh platform-dependent failures
       Call init script helpers with explicit path (./)
       Fix windows build on older mingw versions.
       New approach to handle peer-id related changes to link-mtu.
       Print remote IPv4 address on a dual-stack v6 socket in IPv4 format
       Fix incorrect use of get_ipv6_addr() for iroute options.
       Remove count_netmask_bits(), convert users to use netmask_to_netbits2()
       Fix leftover 'if (false) ;' statements
       Print helpful error message on --mktun/--rmtun if not available.
       explain effect of --topology subnet on --ifconfig
       Add note about file permissions and --crl-verify to manpage.
       repair --dev null breakage caused by db950be85d37
       assume res_init() is always there.
       Correct note about DNS randomization in openvpn.8
       Disallow usage of --server-poll-timeout in --secret key mode.
       slightly enhance documentation about --cipher
       Enforce "serial-tests" behaviour for tests/Makefile
       Revert "Enforce "serial-tests" behaviour for tests/Makefile"
       On signal reception, return EAI_SYSTEM from openvpn_getaddrinfo().
       Use configure.ac hack to apply serial_test AM option only if supported.
       Use EAI_AGAIN instead of EAI_SYSTEM for openvpn_getaddrinfo().
       Move res_init() call to inner openvpn_getaddrinfo() loop
       Fix FreeBSD ifconfig for topology subnet tunnels.
       Produce a meaningful error message if --daemon gets in the way of asking for passwords.
       Document --daemon changes and consequences (--askpass, --auth-nocache).
       Fix build on OpenSolaris (non-gmake)
       Un-break --auth-user-pass on windows
       refactor struct route_ipv6, bring in line with struct route_ipv4 again
       refactor struct route_ipv6_list, bring in line with struct route_list again
       Add route_ipv6_gateway* data structures for rgi6 support.
       Create basic infrastructure for IPv6 default gateway handling / redirection.
       Make client delay less before sending PUSH_REQUEST
       get_default_gateway_ipv6(): Linux / Netlink implementation.
       Implement handling of overlapping IPv6 routes with IPv6 remote VPN server address
       Implement '--redirect-gateway ipv6'
       get_default_gateway_ipv6(): *BSD / MacOS / Solaris PF_ROUTE implementation
       Fix IPv6 host routes to LAN gateway on OpenSolaris
       Replace unaligned 16bit access to TCP MSS value with bytewise access
       Repair test_local_addr() on WIN32
       Add custom check for inet_pton()/inet_ntop() on MinGW/WIN32
       get_default_gateway_ipv6(): Win32 implementation using GetBestRoute2()
       Remove support for snappy compression.
       Fix info.af == AF_UNSPEC case for server with --mtu-disc
       Fix FreeBSD-specific mishandling of gc arena pointer in create_arbitrary_remote()
       remove unused gc_arena in FreeBSD close_tun()
       Un-break compilation on *BSD
       Fix isatty() check for good.
       Fix openserv/validate.o linking issues on mingw.
       Fix library order in -lmbedtls test.
       Implement push-remove option to selectively remove pushed options.
       Upgrade bundled compat-lz4 to upstream release r131.
       Change --enable-pedantic to use -std=c99 and not -ansi (C90).
       Fix problems with NCP and --inetd.
       Do not abort t_client run if OpenVPN instance does not start.
       Fix IP_PKTINFO related compilation failure on NetBSD 7.0
       Show compile-time variant for --multihome in --version output.
       Fix win32 building with C99 mode
       Fix t_client runs on OpenSolaris
       make t_client robust against sudoers misconfiguration
       add POSTINIT_CMD_suf to t_client.sh and sample config
       Fix --multihome for IPv6 on 64bit BSD systems.
       Enable -D_SVR4_2 for compilation on Solaris
       Revert "Enable -D_SVR4_2 for compilation on Solaris"
       Enable -D_XPG4_2 for compilation on Solaris
 
 Guy Yur (1):
       Fix --redirect-private in --dev tap mode.
 
 Heikki Hannikainen (1):
       Always load intermediate certificates from a PKCS#12 file
 
 Heiko Hund (20):
       Fix display of plugin hook types
       Support UTF-8 --client-config-dir
       close more file descriptors on exec
       Ignore UTF-8 byte order mark
       reintroduce --no-name-remapping option
       make --tls-remote compatible with pre 2.3 configs
       add new option for X.509 name verification
       Support non-ASCII TAP adapter names on Windows
       Support non-ASCII characters in Windows tmp path
       make sure sa_family_t is defined
       convert struct signal_info element
       grow route lists dynamically
       fix route struct name
       refine assertion to allow other modes than CBC
       Fix compilation on Windows
       fix warnings on Windows
       extend management interface command "state"
       put virtual IPv6 addresses into env
       interactive service v3
       Windows: do_ifconfig() after open_tun()
 
 Holger Kummert (1):
       Del ipv6 addr on close of linux tun interface
 
 Hubert Kario (2):
       ocsp_check - signature verification and cert staus results are separate
       ocsp_check - double check if ocsp didn't report any errors in execution
 
 Ilya Shipitsin (3):
       initial travis-ci support
       skip t_lpback.sh and t_cltsrv.sh if openvpn configured --disable-crypto
       enable "--disable-crypto" build configuration for travis
 
 Ivo Manca (1):
       Plug memory leak in mbedTLS backend
 
 James Bekkema (1):
       Fix socket-flag/TCP_NODELAY on Mac OS X
 
 James Geboski (1):
       Fix --askpass not allowing for password input via stdin
 
 James Yonan (14):
       Added support for the Snappy compression algorithm
       Always push basic set of peer info values to server.
       TLS version negotiation
       Added "setenv opt" directive prefix.  If present, and if the directive that follows is recognized, it will be processed as if the "setenv opt" prefix was absent.  If present and if the directive that follows is not recognized, the directive will be ignored rather than cause a fatal error.
       MSVC fixes
       Set SSL_OP_NO_TICKET flag in SSL context for OpenSSL builds, to disable TLS stateless session resumption.
       Use native strtoull() with MSVC 2013.
       Define PATH_SEPARATOR for MSVC builds.
       Fixed some compile issues with show_library_versions()
       Added flags parameter to format_hex_ex.
       Extended x509-track for OpenSSL to report SHA1 fingerprint.
       Fixed port-share bug with DoS potential
       Added directive to specify HTTP proxy credentials in config.
       Bind to local socket before dropping privileges
 
 Jan Just Keijser (5):
       man page patch for missing options
       make 'explicit-exit-notify' pullable again
       include ifconfig_ environment variables in --up-restart env set
       Author: Jan Just Keijser <janjust@nikhef.nl>
       Make certificate expiry warning patch (091edd8e299686) work on OpenSSL 1.0.1 and earlier.
 
 Jann Horn (1):
       Remove quadratic complexity from openvpn_base64_decode()
 
 Jeffrey Cutter (1):
       Update contrib/pull-resolv-conf/client.up for no DOMAIN
 
 Jens Neuhalfen (6):
       Make intent of utun device name validation clear
       Fix buffer overflow by user supplied data
       ignore the local config file t_client.rc in git
       Prevent integration test timeout bc. of sudo
       Add unit testing support via cmocka
       Add a test for auth-pam searchandreplace
 
 Jens Wagner (1):
       Fix spurious ignoring of pushed config options (trac#349).
 
 Jesse Glick (1):
       Allow use of NetBeans without saving nbproject/ directory.
 
 Joachim Schipper (5):
       doc/management-notes.txt: fix typo
       Fix typo in ./configure message
       Refactor tls_ctx_use_external_private_key()
       --management-external-key for PolarSSL
       external_pkcs1_sign: Support non-RSA_SIG_RAW hash_ids
 
 Jonathan K. Bullard (3):
       Fix mismatch of fprintf format specifier and argument type
       Fix null pointer dereference in options.c
       Fail if options have extra parameters [v2]
 
 Josh Cepek (7):
       Fix parameter listing in non-debug builds at verb 4
       (updated) [PATCH] Warn when using verb levels >=7 without debug
       Fix proto tcp6 for server & non-P2MP modes
       Fix Windows script execution when called from script hooks
       Correct error text when no Windows TAP device is present
       Require a 1.2.x PolarSSL version
       Push an IPv6 CIDR mask used by the server, not the pool's size
 
 Julien Muchembled (1):
       Fix --mtu-disc option with IPv6 transport
 
 Kenneth Rose (1):
       Fix v3 plugins to support returning values back to OpenVPN.
 
 Klee Dienes (1):
       tls_ctx_load_ca: Improve certificate error messages
 
 Leon Klingele (1):
       Add link to bug tracker
 
 Leonardo Basilio (1):
       Correctly report TCP connection timeout on windows.
 
 Lev Stipakov (26):
       Peer-id patch v7
       Add the peer-id to the output of the status command
       Prevent memory drain for long lasting floating sessions
       Disallow lameduck's float to an address taken by another client
       Fix NULL dereferencing
       Fix mssfix default value in connection_list context
       This fixes MSVS 2013 compilation.
       Continuation of MSVS fixes
       Fast recovery when host is in unreachable network
       Fix compilation error with --disable-crypto
       Send push reply right after async auth complete
       Fix compilation with --disable-server
       Refine float logging
       Generate openvpn-plugin.h for MSVC build
       Replace variable length array with malloc
       Use adapter index instead of name for windows IPv6 interface config
       Notify clients about server's exit/restart
       Use adapter index for add/delete_route_ipv6
       Pass adapter index to up/down scripts
       Detecting and logging Windows versions
       Report Windows bitness
       Fix "implicit declaration" compiler warning
       Drop recursively routed packets
       Support for disabled peer-id
       Exclude peer-id from pulled options digest
       Use separate list for per-client push options
 
 Lukasz Kutyla (1):
       Fix privilege drop if first connection attempt fails
 
 Matthias Andree (1):
       Enable TCP_NODELAY configuration on FreeBSD.
 
 Max Muster (1):
       Remove duplicate cipher entries from TLS translation table.
 
 Michael McConville (1):
       Fix undefined signed shift overflow
 
 Michal Ludvig (1):
       Support for username-only auth file.
 
 Mike Gilbert (2):
       Add configure check for the path to systemd-ask-password
       Include systemd units in the source tarball (make dist)
 
 Niels Ole Salscheider (1):
       Fix build with libressl
 
 Peter Sagerson (1):
       Fix configure interaction with static OpenSSL libraries
 
 Philipp Hagemeister (2):
       Add topology in sample server configuration file
       Implement on-link route adding for iproute2
 
 Phillip Smith (1):
       Use bob.example.com and alice.example.com to improve clarity of documentation
 
 Robert Fischer (1):
       Updated manpage for --rport and --lport
 
 Samuel Thibault (1):
       Ensure that client-connect files are always deleted
 

 Samuli Seppänen (15):

       Removed ChangeLog.IPv6
       Added cross-compilation information INSTALL-win32.txt
       Updated README
       Cleaned up and updated INSTALL
       Fix to --shaper documentation on the man-page
       Properly escape dashes on the man-page
       Improve documentation in --script-security section of the man-page
       Add CONTRIBUTING.rst
       Update CONTRIBUTING.rst to allow GitHub PRs for code review purposes
       Clarify the fact that build instructions in README are for release tarballs
       Mention tap-windows6 in INSTALL file
       Use an up-to-date easy-rsa URL on the man-page
       Clarify which Windows versions require which TUN/TAP driver
       Deprecate the automatic part of openvpnserv.exe in favor of openvpnserv2.exe
       Automatically cache expected IPs for t_client.sh on the first run
 
 Selva Nair (26):
       Fix termination when windows suspends/sleeps
       Do not hard-code windows systemroot in env_block
       Handle ctrl-C and ctrl-break events on Windows
       Unbreak read username password from management
       Restrict options/configs for startup through interactive service
       Send stdout and stderr of OpenVPN started by interactive service to NUL
       Handle localized Administrators group name in windows
       Fix interactive service ignoring stop command if openvpn is running
       Use appropriate buffer size for WideCharToMultiByte output in interactive.c
       Refactor and move the block-outside-dns code to a new file (block_dns.[ch])
       Add support for block-outside-dns through the interactive service
       Ensure input read using systemd-ask-password is null terminated
       Support reading the challenge-response from console
       Make error non-fatal while deleting address using netsh
       Add support for register-dns through interactive service
       Fix handling of out of memory error in interactive service
       Fix the comparison of pull options hash on restart
       Set WFP engine handle to NULL in win_wfp_uninit()
       Make block-outside-dns work with persist-tun
       Add an option to filter options received from server
       Ignore SIGUSR1/SIGHUP during exit notification
       Fix management-external-cert option parsing error
       Return process id of openvpn from interactive service to client
       Exponentially back off on repeated connect retries
       Promptly close the netcmd_semaphore handle after use
       Avoid format specifier %zu for Windows compatibility
 
 Steffan Karger (180):
       PolarSSL-1.2 support
       Improve PolarSSL key_state_read_{cipher, plain}text messages
       Improve verify_callback messages
       Config compatibility patch. Added translate_cipher_name.
       Switch to IANA names for TLS ciphers.
       Fixed autoconf script to properly detect missing pkcs11 with polarssl.
       Use constant time memcmp when comparing HMACs in openvpn_decrypt.
       Fixed tls-cipher translation bug in openssl-build
       Fixed usage of stale define USE_SSL to ENABLE_SSL
       Do not pass struct tls_session* as void* in key_state_ssl_init().
       Require polarssl >= 1.2.10 for polarssl-builds, which fixes CVE-2013-5915.
       Also update TLSv1_method() calls in support code to SSLv23_method() calls.
       Update TLSv1 error messages to SSLv23 to reflect changes from commit 4b67f98
       If --tls-cipher is supplied, make --show-tls parse the list.
       Remove OpenSSL tmp_rsa_callback. Removes support for ephemeral RSA in TLS.
       Make tls_ctx_restrict_ciphers accept NULL as char *cipher_list.
       Disable export ciphers by default for OpenSSL builds.
       Fix compiler warning for unused result of write()
       Remove unused variables from ssl_verify_polarssl.c's x509_get_serial()
       Fix compiler warnings in ssl_polarssl.c
       Bump minimum OpenSSL version to 0.9.8
       Add openssl-specific common cipher list names to ssl.c.
       Disable unsupported TLS cipher modes by default, cleans --show-tls output.
       configure.ac: check for SSL_OP_NO_TICKET flag in OpenSSL
       configure.ac: use CPPFLAGS for SSL_OP_NO_TICKET check
       Upgrade to PolarSSL 1.3
       Improve error reporting during key/cert loading with PolarSSL.
       Update openvpn-plugin.h for PolarSSL 1.3.
       Add support for elliptic curve diffie-hellmann key exchange (ECDH)
       Add an elliptic curve testing cert chain to the sample keys
       Change signedness of hash in x509_get_sha1_hash(), fixes compiler warning.
       Fix OCSP_check.sh to also use decimal for stdout verification.
       Make serial env exporting consistent amongst OpenSSL and PolarSSL builds.
       Fix build system to accept non-system crypto library locations for plugins.
       Remove function without effect (cipher_ok() always returned true).
       Remove unneeded wrapper functions in crypto_openssl.c
       Remove unneeded defines (were needed for pre-0.9.7 OpenSSL).
       Fix merge error in a6c573d, the ssl ctx is now abstracted.
       Use generic openvpn_x509_cert_t in ssl_verify_polarssl.c
       Fix ssl.c, ssl_verify_* includes
       Move #include "ssl_verify.h" from ssl.h to the source files that need it.
       Remove dependency on manage.h from ssl_verify.h
       Remove unused variable 'proxy' from socket_restart_pause()
       Add (default disabled) --enable-werror option to configure
       Fix --disable-ssl builds, were broken by cleanup in 63dc03d.
       configure.ac: fix SSL_OP_NO_TICKET check
       Fix bug that incorrectly refuses oid representation eku's in polar builds
       Update README.polarssl
       cleanup: remove #if 0'ed function initiate_untrusted_session() from ssl.c.
       Rename ALLOW_NON_CBC_CIPHERS to ENABLE_OFB_CFB_MODE, and add to configure.
       Add proper check for crypto modes (CBC or OFB/CFB)
       Improve --show-ciphers to show if a cipher can be used in static key mode
       Extend t_lpback tests to test all ciphers reported by --show-ciphers
       Don't issue warning for 'translate to self' tls-ciphers
       Don't exit daemon if opening or parsing the CRL fails.
       Define dummy SSL_OP_NO_TICKET flag if not present in OpenSSL.
       Fix typo in cipher_kt_mode_{cbc, ofb_cfb}() doxygen.
       Fix some unintialized variable warnings
       Fix clang warning in options.c
       Fix compiler warnings in ssl_polarssl.c.
       Fix regression with password protected private keys (polarssl)
       Remove unused variables from ssl_verify_openssl.c extract_x509_extension()
       Fix assertion error when using --cipher none
       Add --tls-version-max
       Modernize sample keys and sample configs
       Drop too-short control channel packets instead of asserting out.
       Really fix '--cipher none' regression
       Update doxygen (a bit)
       Set tls-version-max to 1.1 if cryptoapicert is used
       openssl: add crypto_msg(), to easily log openssl errors
       openssl: add more descriptive message for 'no shared cipher' error
       Remove ENABLE_SSL define (and --disable-ssl configure option)
       openssl: use crypto_msg(), get rid of openssl-specific code in error.c
       Add option to disable Diffie Hellman key exchange by setting '--dh none'
       Account for peer-id in frame size calculation
       Disable SSL compression
       Use tls-auth in sample config files
       Fix frame size calculation for non-CBC modes.
       Get rid of old OpenSSL workarounds.
       polarssl: make sure to always null-terminate the cn
       Allow for CN/username of 64 characters (fixes off-by-one)
       Change float log message to include common name, if available.
       Remove unneeded parameter 'first_time' from possibly_become_daemon()
       Remove size limit for files inlined in config
       polarssl: remove code duplication in key_state_write_plaintext{, _const}()
       Improve --tls-cipher and --show-tls man page description
       polarssl: disable 1/n-1 record splitting
       cleanup: remove md5 helper functions
       Re-read auth-user-pass file on (re)connect if required
       Clarify --capath option in manpage
       Call daemon() before initializing crypto library
       write pid file immediately after daemonizing
       Increase control channel packet size for faster handshakes
       Make __func__ work with Visual Studio too
       fix regression: query password before becoming daemon
       Fix using management interface to get passwords.
       reintroduce md5_digest wrapper struct to fix gcc warnings
       Fix out-of-tree builds; openvpn-plugin.h should be in AC_CONFIG_HEADERS
       Fix overflow check in openvpn_decrypt()
       Replace strdup() calls for string_alloc() calls
       Check return value of ms_error_text()
       polarssl: add easy logging for PolarSSL errors
       polarssl: Improve PolarSSL logging
       openssl: be less verbose about cipher translation errors
       hardening: add insurance to exit on a failed ASSERT()
       Fix memory leak in auth-pam plugin
       openssl: remove usage of OPENSSL_malloc() from show_available_curves
       polarssl: fix --client-cert-not-required
       polarssl: add --verify-client-cert optional support
       Fix (potential) memory leak in init_route_list()
       Add macro to ensure we exit on fatal errors
       polarssl: also allocate PKCS#11 certificate object on demand
       polarssl: don't use deprecated functions anymore
       polarssl: require >= 1.3.8
       Fix memory leak in add_option() by simplifying get_ipv6_addr
       remove nonsense const specifier in nonfatal() return value
       openssl: properly check return value of RAND_bytes()
       Fix rand_bytes return value checking
       Fix openssl builds with custom-built library: specify most-dependent first
       Support duplicate x509 field values in environment
       Warn user if their certificate has expired
       Disable certificate notBefore/notAfter sanity check on OpenSSL < 1.0.2
       Make assert_failed() print the failed condition
       cleanup: get rid of httpdigest.c type warnings
       Fix regression in setups without a client certificate
       polarssl: actually use polarssl debug logging
       polarssl: optimize polar_ok() for non-errors
       Update manpage: OpenSSL might also need /dev/urandom inside chroot
       polarssl: use wrappers to access md_info_t member functions
       polarssl: remove now redundant 128-bit blowfish key override
       socks.c: fix check on get_user_pass() return value(s)
       configure.ac: simplify crypto library configuration
       configure.ac: fix polarssl autodetection
       Allow NULL argument in cipher_ctx_get_cipher_kt()
       Remove reuse of key_type during init of data channel auth and tls-auth
       Move crypto_options into key_state and stop using context in SSL-mode.
       Move key_ctx_bi into crypto_options
       Move packet_id into crypto_options
       Change openvpn_encrypt() to append to work buffer only
       Create separate function for replay check
       Add AEAD cipher support (GCM)
       Add cipher name translation for OpenSSL.
       Add preliminary server-side support for negotiable crypto parameters
       Minor AEAD patch cleanup
       Clean up get_tls_handhake_key()
       Fix OCSP_check.sh
       Make AEAD modes work with OpenSSL 1.0.1-1.0.1c
       hardening: add safe FD_SET() wrapper openvpn_fd_set()
       Only include aead encrypt/decrypt functions if AEAD modes are supported
       Fix potential null-pointer dereference
       Fix memory leak in argv_extract_cmd_name()
       Replace MSG_TEST() macro for static inline msg_test()
       fixup: change init_key_type() param name in declaration too
       Further restrict default cipher list
       PolarSSL x509_get_sha1_hash now returns correct SHA1 fingerprint.
       Implemented x509-track for PolarSSL.
       Migrate to mbed TLS 2.x
       Rename files with 'polarssl' in the name to 'mbedtls'
       configure.ac: link to all mbed TLS libs during library detection
       mbedtls: check that private key and certificate match on start
       mbedtls: improve error reporting in tls verify callback
       Remove trailing newline from verify callback error messages
       Don't limit max incoming message size based on c2->frame
       cleanup: remove alloc_buffers argument from multi_top_init()
       mbedtls: don't set debug threshold if compiled without MBEDTLS_DEBUG_C
       Add client-side support for cipher negotiation
       Add options to restrict cipher negotiation
       Add server-side support for cipher negotiation
       Allow ncp-disable and ncp-ciphers to be specified in ccd files
       Fix '--cipher none --cipher' crash
       Discourage using 64-bit block ciphers
       Fix unittests for out-of-source builds
       Fix --mssfix when using NCP
       Drop gnu89/c89 support, switch to c99
       cleanup: remove code duplication in msg_test()
       Add SHA256 fingerprint support
       Make sure options->ciphername and options->authname are always defined
       Update cipher-related man page text
       Fix duplicate PUSH_REPLY options
       Check --ncp-ciphers list on startup
 
 TDivine (1):
       Fix "code=995" bug with windows NDIS6 tap driver.
 
 Tamas TEVESZ (1):
       Add support for client-cert-not-required for PolarSSL.
 
 Thomas Veerman (2):
       Fix "." in description of utun.
       Update expiry date in management event loop
 
 ValdikSS (4):
       Add Windows DNS Leak fix using WFP ('block-outside-dns')
       Clarify mssfix documentation
       Clarify --block-outside-dns documentation
       Update --block-outside-dns to work on Windows Vista
 
 Vasily Kulikov (1):
       Mac OS X Keychain management client
 
 Yawning Angel (1):
       Fix SOCKSv5 method selection
 
 Yegor Yefremov (3):
       socket: remove duplicate expression
       polarssl: fix unreachable code
       cert_data: fix memory leak
 
 janjust (1):
       Fix "White space before end tags can break the config parser"
 
 kangsterizer (1):
       Fix typo in sample build script to use LDFLAGS
 
 svimik (1):
       Fix segfault when enabling pf plug-ins
 

 2012.09.12 -- Version 2.3_beta1
 Arne Schwabe (7):
       Fixes error: --key fails with EXTERNAL_PRIVATE_KEY: No such file or directory if --management-external-key is used
       Merge almost identical create_socket_tcp and create_socket_tcp6
       Document the inlining of files in openvpn and document key-direction
       Merge getaddr_multi and getaddr6 into one function
       Document --management-client and --management-signal a bit better
       Document that keep alive will double the second value in server mode and give a short explanation why the value is chosen.
       Add checks for external-key-managements
 
 David Sommerseth (1):
       Fix reconnect issues when --push and UDP is used on the server
 
 Gert Doering (4):
       Reduce --version string detail about IPv6 to just "[IPv6]".
       Put actual OpenVPN command line on top of corresponding log file.
       Keep pre-existing tun/tap devices around on *BSD
       make "ipv6 ifconfig" on linux compatible with busybox ifconfig
 
 Heiko Hund (6):
       fix regression with --http-proxy[-*] options
       add x_msg_va() log function
       add API for plug-ins to write to openvpn log
       remove stale _openssl_get_subject() prototype
       remove unused flag SSLF_NO_NAME_REMAPPING
       Add --compat-names option
 

 2012.07.20 -- Version 2.3_alpha3
 Arne Schwabe (1):
       Fix compiling with --disable-management
 
 Gert Doering (1):
       Repair "tap server" mode brokenness caused by <stdbool.h> fallout
 
 Heiko Hund (4):
       make non-blocking connect work on Windows
       don't treat socket related errors special anymore
       remove unused show_connection_list debug function
       add option --management-query-proxy
 

 2012.06.29 -- Version 2.3_alpha2
 Adriaan de Jong (11):
       Fixed off-by-one in serial length calculation
       Migrated x509_get_subject to use of the garbage collector
       Migrated x509_get_serial to use the garbage collector
       Migrated x509_get_sha1_hash to use the garbage collector
       Ensure sys/un.h autoconf detection includes sys/socket.h
       Added support for new PolarSSL 1.1 RNG
       Added a configuration option to enable prediction resistance in the PolarSSL random number generator.
       Use POLARSSL_CFLAGS instead of POLARSSL_CRYPTO_CFLAGS in configure.ac
       Removed support for PolarSSL < 1.1
       Updated README.polarssl with build system changes.
       Removed stray "Fox-IT hardening" string.
 
 Alon Bar-Lev (94):
       build: version should not contain '-'
       package: rpm: strip should be handled by package management
       cleanup: options.c: remove redundant include
       cleanup: remove C++ warnings
       cleanup: win32.c: wrong printf format
       cleanup: remove redundant ';'
       cleanup: crypto_openssl.c: remove support for pre-openssl-0.9.6
       cleanup: tun.c: fix incorrect option in message (ip-win32)
       cleanup: memcmp.c: remove unused source
       fixup: init.c: add missing conditional for ENABLE_CLIENT_CR
       build: correct place to alter WINVER is at build system
       Update .gitignore
       build: handle printf style format in mingw
       build: rename plugin directory to plugins
       build: plugins: properly use CC, CFLAGS and LDFLAGS
       build: we need the sample.ovpn in future
       Remove install-win32
       Remove easy-rsa
       Remove tap-win32
       cleanup: rename tap-windows function from win32 to win
       build: remove windows specific build system
       build: split acinclude.m4 into m4/*
       build: m4/ax_varargs.m4: cleanup
       build: m4/ax_emptyarray.m4: cleanup
       build: m4/ax_socklen_t.m4: cleanup
       build: autotools: first pass of trivial autotools changes
       build: autoconf: remove OPENVPN_ADD_LIBS useless macro
       build: remove awk and non-standard autoconf output processing
       build: standard directory layout
       build: add libtool + windows resources for executables
       build: autoconf: commands as environment
       build: libdl usage
       build: properly detect and use socket libs
       build: autoconf: minor cleanups
       build: proper selinux detection and usage
       build: distribute pkg.m4
       build: proper pkcs11-helper detection and usage
       build: properly process lzo-stub
       build: proper lzo detection and usage
       build: proper crypto detection and usage
       build: autoconf: update defaults for options
       build: win-msvc: msbuild format
       build: move out config.h include from syshead
       build: split out compat
       build: move gettimeofday() emulation to compat
       build: move daemon() emulation into compat
       build: move inet_ntop(), inet_pton() emulation into compat
       cleanup: move console related function into its own module
       build: move wrappers into platform module
       build: windows: install version.sh to allow installer read version
       build: distribute samples in windows
       build: use tap-windows.h as external dependency
       build: ax_varargs.m4: fixups
       build: autoconf: misc sockets fixups
       build: enable lzo by default
       build: windows: set vendor to openvpn project + cleanups
       build: assume dlfcn is available on all supported platforms
       build: openbsd: detect netinet/ip.h correctly
       build: tap: search for tap header
       build: msvc: upgrade to Visual Studio 2010 + fixups
       Enable pedantic in windows compilation
       cleanup: flags should not be bool
       cleanup: avoid using ~0 - generic
       cleanup: avoid using ~0 - ipv6
       cleanup: avoid using ~0 - netmask
       cleanup: avoid using ~0 - windows
       cleanup: gc usage
       build: fix some statement left from conversion
       build: properly detect netinet/ip.h structs
       build: properly detect TUNSETPERSIST
       cleanup: plugin: support C++ plugin
       cleanup: remove C++ comments
       cleanup: add .gitattributes to control eol style explicitly
       crash: packet_id_debug_print: sl may be null
       build: use stdbool.h if available
       build: fix typo in --enable-save-password
       build: windows: convert resources to UTF-8
       build: check minimum polarssl version
       cleanup: update .gitignore
       cleanup: spec: make space/tab consistent
       build: spec: we support openssl >= 0.9.7
       build: insall README* document using build system
       build: detect sys/wait.h required for *bsd
       build: add git revision to --version output if build from git repository
       build: cleanup: yet another forgotten brackets
       build: update INSTALL to recent changes
       build: support platforms that does not need explicit tun headers
       build: do not support <polarssl-1.1.0
       build: add --with-special-build to provide special build string
       cleanup: pkcs11.c: resolve wanings
       build: integrate plugins build into core build
       build: plugins: set defaults based on platform
       cleanup: windows: convert argv (UCS-2 to UTF-8) at earliest
       build: msvc: chdir with change drive to script location
 
 Arne Schwabe (7):
       Add the query to the error message.
       Explain that route-nopull also causes the client to ignore dhcp options.
       Add the name of the context where option is not allowed to the error message.
       Only use tmpdir if tmp_dir is really used.
       Completely remove ancient IANA port warning.
       Remove ENABLE_INLINE_FILES conditionals
       Remove ENABLE_CONNECTIONS ifdefs
 
 David Sommerseth (5):
       Clean-up: Presume that Linux is always IPv6 capable at build time
       Simplify check_cmd_access() function
       Change version to indicate the master branch is not a version
       Some filesystems don't like ':', which is a path 'make dist' would use
       Remove two unused functions
 
 Frank de Brabander (1):
       Fix reported compile issues on OSX 10.6.8
 
 Gert Doering (10):
       repair t_client.sh test after build system revolution
       t_client.sh iproute2 script fixes
       t_client.sh - fix for iproute2, print summary line
       Implement search for "first free" tun/tap device on Solaris
       cleanup and redefine metric handling for IPv6 routes
       remove "*option" element in "struct route_ipv6"
       Remove warning about explicit support for IPv6 support not provided MacOS X
       Add missing pieces to IPv6 route gateway handling.
       Update TODO.IPv6 list
       Remove #include "config.h" from ssl_polarssl.h
 
 Heiko Hund (3):
       remove wrapper code for Windows CryptoAPI function
       fix warnings in event.c when building for win32-64
       remove the --auto-proxy option from openvpn
 
 Igor Novgorodov (1):
       Remove calls to OpenSSL when building with --disable-ssl
 
 Jonathan K. Bullard (2):
       Fix file access checks on commands
       Clarified the docs and help screen about what a 'cmd' is
 
 Samuli Seppänen (1):
       Added notes about upgrading from 2.3-alpha1 and earlier to INSTALL-win32.txt

 2012.02.21 -- Version 2.3-alpha1
 Adriaan de Jong (127):
       Added Doxygen doxyfile
       Changed configure to accept --with-ssl-type=openssl
       Refactored to rand_bytes for OpenSSL-independency
       Refactored OpenSSL-specific constants
       Refactored maximum cipher and hmac length constants
       Refactored show_available_* functions
       Refactored SSL_clear_error()
       Refactored crypto initialisation functions
       Refactored DES key manipulation functions
       Refactored NTLM DES key generation
       Refactored message digest type functions
       Refactored message digest functions
       Refactored HMAC functions
       Refactored cipher key types
       Refactored cipher functions
       Added PRNG doxygen
       Refactored: Moved crypto.h inline functions to end of file
       Removed stale OpenSSL defines from crypto.h
       Added a check for Openssl or PolarSSL defines
       Refactored: Added stubs for new files
       Refactored SSL initialisation functions
       Refactored TLS_PRF to new hmac and md primitives
       Refactored tls_show_available_ciphers
       Refactored get_highest_preference_tls_cipher
       Refactored root SSL context initialisation
       Refactored new external key code
       Refactored DH paramater loading
       Refactored root TLS option settings
       Refactored PKCS#12 key loading
       Refactored PKCS#11 loading
       Refactored windows cert loading
       Refactored load certificate functions
       Refactored private key loading code
       Refactored external key loading from management
       Refactored CA and extra certs code
       Refactored cipher restriction code
       Refactored tls_options, key_state, and key_source data structures
       Refactored initalisation of key_states
       Refactored key_state free code
       Refactored print_details
       Refactored key_state read code (including bio_read())
       Refactored key_state write functions
       Refactored: Moved BIO debug functions to OpenSSL backend
       Refactored: removed ks and ks_lame macro for clarity
       Refactored: moved write_empty_string function back
       Refactored Doxygen for tls_multi functions
       Migrated data structures needed by verification functions to ssl_common.h
       Refactored client_config_dir_exclusive function
       Refactored certificate hash lock checks
       Refactored common name locking functions
       Refactored username and password authentication code
       Add some extra comments
       Refactored: split verify_callback into two parts
       Added function to extract and verify the subject from a certificate
       Added function to verify and extract the username
       Refactored: removed global x509_username_field
       Refactored: separated environment setup during verification
       Refactored: Netscape certificate type verification
       Refactored key usage verification code
       Refactored EKU verification
       Refactored tls-remote checking
       Refactored tls-verify-plugin code
       Refactored tls-verify script code
       Refactored CRL checks
       Minor cleanup in verify_cert:
       Refactored: Moved verify_cert to ssl_verify
       Cleaned up ssl.h
       Refactored: made M_SSL dependent on USE_OPENSSL
       Refactored: renamed X509 functions from verify_*
       Separated OpenSSL-specific parts of the PKCS#11 driver
       Modified base64 code in preparation for PolarSSL merge
       Final cleanup before PolarSSL addition:
       Refactored X509 track feature to be contained within the openssl backend
       Added PolarSSL support:
       Fixed a missing include in ssl_backend.h
       Fixed a bug in the hash generation in ssl_verify_openssl.c
       Added SHA_DIGEST_SIZE definition
       Changed PolarSSL crypto backend to support v0.99-pre5
       Updated ssl_polarssl.c to work with 0.99-pre5
       Fixed a compilation warning for size_t key sizes
       Added a warning that the PolarSSL library does not support pkcs12 files.
       Added warning that --capath is not available with PolarSSL
       Disable CryptoAPI when not using OpenSSL, and document that fact.
       Removed support for management external keys in PolarSSL
       Removed stray X509_free from ssl.c
       Refactored (and disabled for PolarSSL) support for writing external cert files in scripts
       Added an extra define to allow building without PKCS#11
       Added SSL library to title string
       Disabled X.509 track and username selection for PolarSSL
       Hardening: periodically reset the PRNG's nonce value
       Fixes for the plugin system:
       Further improvements to plugin support:
       Fixed an unintentional change in the options calculated key size.
       Moved print messages back to generic crypto.c from cipher backends
       Moved HMAC prints back to main crypto module
       Added back checks for ks->authenticated in verify_user_pass
       Moved gc_new and gc_free to begin end of function
       Fixed a bug in the return value of ssl_verify when pre_verify failed
       Unified verification function return values:
       Removed a stray Fox-IT tag
       Fixed a typo: print the subject instead of the serial for verification errors
       Made SSL_CIPHER const in print_details, to fix warning
       Moved to PolarSSL 1.0.0:
       Added missing #ifdef to allow --disable-managent to work again
       Fixed disabling crypto and SSL
       Got rid of a few magic numbers in ntlm.c
       Removed obsolete des_cblock and des_keyschedule
       Further removal of des_old.h based calls
       Fixed missing comma in plugin.h
       Moved prng_uninit out of crypto_uninit_lib
       Moved CryptoAPI header include to the ssl_openssl.c
       Reordered functions to ensure warning-free Windows build
       Added options to switch between OpenSSL and PolarSSL and PKCS11...
       Moved from strsep to strtok, for Windows compatibility
       Minor cleanup to enable warning-free Windows build:
       Fixed a typo when initialising cryptoapi certs
       Minor code cleanup: cleaned up error handling in verify_cert.
       Moved out of memory prototype to error.h, as the definition is in error.c
       Removed support for calling gc_malloc with a NULL gc_arena struct
 
       (The follwing patches from Adriaan was mistakenly merged with
        the wrong commit author in the git tree)
       Doxygen: Added data channel crypto docs
       Added control channel crypto docs
       Added compression docs
       Added reliability layer documentation
       Added memory management documentation
       Added data channel fragmentation docs
       Added main/control docs
       Moved doxygen-specific files to a separate directory
 
 Byron Ellacott (1):
       autoconf fixes for building on OSX
 
 David Sommerseth (50):
       Provide 'dev_type' environment variable to plug-ins and script hooks
       Define the new openvpn_plugin_{open,func}_v3() API
       Implement the core v3 plug-in function calls.
       Extend the v3 plug-in API to send over X509 certificates
       Added a simple plug-in demonstrating the v3 plug-in API.
       Separate the general plug-in version constant and v3 plug-in structs version
       Use a version-less version identifier on the master branch
       Fix the --client-cert-not-required feature
       Change the default --tmp-dir path to a more suitable path
       Improve the mysprintf() issue in openvpnserv.c
       Add a simple comment regarding openvpn_snprintf() is duplicated
       Merge branch 'feat_ipv6_transport'
       Merge branch 'feat_ipv6_payload'
       Merge branch 'svn-branch-2.1' into merge
       Solved hidden merge conflicts between master and svn-branch-2.1
       Fix const declarations in plug-in v3 structs
       Merge remote-tracking branch 'cron2/feat_ipv6_payload_2.3'
       Don't define ENABLE_PUSH_PEER_INFO if SSL is not available
       Fix compiling issues with pkcs11 when --disable-management is configured
       Remove support for Linux 2.2 configuration fallback
       Revert "Add new openssl.cnf to easy-rsa/Windows"
       Merge remote branch SVN 2.1 into the git tree
       Merge branch 'svn-merger'
       Fix Microsoft Visual Studio incompatibility in plugin.c
       Fixed compile issues on FreeBSD and Solaris
       Fix PolarSSL and --pkcs12 option issues
       Fix FreeBSD/OpenBSD/NetBSD compiler warnings in get_default_gateway()
       Make '--win-sys env' default
       Do some file/directory tests before really starting openvpn
       Fix bug after removing Linux 2.2 support
       Don't look for 'stdin' file when using --auth-user-pass
       Fix compiling with --disable-crypto and/or --disable-ssl
       Fix a couple of issues in openvpn_execve()
       Move away from openvpn_basename() over to platform provided basename()
       Enable access() when building in Visual Studio
       New Windows build fixes
       Fix compilation errors on Linux platforms without SO_MARK
       autotools ./configure don't like compat.h
       Fix pool logging when IPv6 is not enabled
       Don't check for file presence on inline files
       Add --route-pre-down/OPENVPN_PLUGIN_ROUTE_PREDOWN script/plug-in hook
       Enhance the error handling in _openssl_get_subject()
       Fix assert() situations where gc_malloc() is called without a gc_arena object
       Fix compile issues when plug-ins are disabled.
       Remove --show-gateway if debug info is not enabled (--disable-debug)
       Fix compile issues with status.c
       Connection entry {tun,link}_mtu_defined not set correctly
       Makefile.am referenced a now non-existing config-win32.h
       Makefile.am was missing ssl_common.h
       Revamp check_file_access() checks in stdin scenarios
 
 Davide Guerri (1):
       New feauture: Add --stale-routes-check
 
 Frank de Brabander (1):
       Fixed wrong return type of cipher_kt_mode
 
 Frederic Crozat (1):
       Add support to forward console query to systemd
 
 Gert Doering (45):
       Add more detailed explanation regarding the function of "--rdns-internal"
       Enable IPv6 Payload in OpenVPN p2mp tun server mode.  20100104-1 release.
       remove NOTES file from commit - private scribbling
       NetBSD fixes - on 4.0 and up, use multi-af mode.
       new feature: "ifconfig-ipv6-push" (from ccd/ config)
       add some TODOs to TODO.IPv6
       undo accidential duplication of existing "--iroute" line in the help text
       basic documentation of IPv6 related options and their syntax
       Enable IPv6 Payload in OpenVPN p2mp tun server mode.
       remove NOTES file from commit - private scribbling
       env_block(): if PATH is not set, add standard PATH setting to env
       add IPv6 route add / route delete code for windows (using "netsh")
       - Win32 IPv6 ifconfig support, using "netsh" calls
       drop "book ipv6" from open_tun() and tuncfg() prototypes
       document recent changes and open TODOs, adapt --version info, tag release
       Win32: set next-hop for IPv6 routes according to TUN/TAP mode
       when deleting a route on win32, also add gateway address
       WIN32: if IPv6 requested in TUN mode, check if TUN/TAP driver < 9.7
       revert unconditionally-enabling of setenv_es() logging
       implement IPv6 ifconfig + route setup/deletion on OpenBSD
       full "VPN client connect" test framework for OpenVPN t_client.rc-sample
       renamed t_client.sh to t_client.sh.in
       2.2-beta3 has a signed TAP driver with the IPv6 code - test for 9.8
       correct URL for "more information about IPv6 patch is *here*"
       bugfix for linux/iproute2: IPv6 ifconfig code block was not called for "dev tun"+"topology subnet"
       bump IPv6 version number (openvpn --version) to 20100922-1
       Implement "ipv6 ifconfig" for TAP interfaces on Solaris interfaces
       rebased to 2.2RC2 (beta 2.2 branch)
       Windows IPv6 cleanup - properly remove IPv6 routes and interface config
       For all accesses to "struct route_list * rl", check first that rl is non-NULL
       Replace 32-bit-based add_in6_addr() implementation by an 8-bit based one
       Platform cleanup for NetBSD
       Move block for "stale-routes-check" config inside #ifdef P2MP_SERVER block
       add missing break between "case IPv4" and "case IPv6"
       bump tap driver version from 9.8 to 9.9
       log error message and exit for "win32, tun mode, tap driver version 9.8"
       work around inet_ntop/inet_pton problems for MSVC builds on WinXP
       Fix build-up of duplicate IPv6 routes on reconnect.
       Fix list-overrun checks in copy_route_[ipv6_]option_list()
       add "print test titles" and "use sudo" functionality to t_client.rc
       Platform cleanup for FreeBSD
       Implement IPv6 interface config with non-/64 prefix lengths.
       Fix RUN_SUDO functionality for t_client.sh
       Document IPv6-related environment variables.
       Platform cleanup for OpenBSD
 
 Gisle Vanem (1):
       Avoid re-defining uint32_t when using mingw compiler
 
 Gustavo Zacarias (1):
       Fix compile issues when using --enable-small and --disable-ssl/--disable-crypto
 
 Heiko Hund (16):
       add .gitignore to official repository
       remove function is_proto_tcp()
       remove legacy code to query IE proxy information
       lowercase include header name in syshead.h
       define IN6_ARE_ADDR_EQUAL macro for WIN32
       add --mark option to set SO_MARK sockopt
       Windows UTF-8 input/output
       UTF-8 X.509 distinguished names
       set Windows environment variables as UCS-2
       handle Windows unicode paths
       replace check for TARGET_WIN32 with WIN32
       do not use mode_t on Windows
       use the underscore version of stat on Windows
       make MSVC link against shell32 as well
       move variable declaration to top of function
       define access mode flag X_OK as 0 on Windows
 
 Igor Novgorodov (1):
       The code blocks enabled by ENABLE_CLIENT_CR depends on management
 
 James Yonan (57):
       Added "management-external-key" option.
       Minor addition of logging info before and after execution of Windows net commands.
       Misc fixes to r6708.
       Added --x509-track option.
       * added --management-up-down option to allow management interface to be notified of tunnel up/down events.
       Fixed minor compile issue triggered on builds where MANAGEMENT_DEF_AUTH is not enabled.
       Implemented get_default_gateway_mac_addr for Mac OS X
       Fixes to r6925.
       Properly handle certificate serial numbers > 32 bits.
       Added "client-nat" option for stateless, one-to-one NAT on the client side.
       Renamed branch to reflect that it is no longer beta.
       env_filter_match now includes the serial number of all certs
       Fixed issue where a client might receive multiple push replies from a server
       Fixed bug introduced in r7031 that might cause this error message:
       Extended "client-kill" management interface command (server-side)
       Client will now try to reconnect if no push reply received within handshake-window seconds.
       Version 2.1.3n
       Fixed compiling issues when using --disable-crypto
       Added "management-external-key" option.
       Misc fixes to r6708.
       win/sign.py now accepts an optional tap-dir argument.
       Added "auth-token" client directive
       Added ./configure --enable-osxipconfig option for Mac OS X
       Added more packet ID debug info at debug level 3 for debugging false positive packet replays.
       Fixed bug that incorrectly placed stricter TCP packet replay rules on UDP sessions
       Fixed bug in port-share that could cause port share process to crash
       For Mac OSX, when DARWIN_USE_IPCONFIG is defined, retry ipconfig command on failure
       Version 2.1.3t
       Revert r7092 and r7151, i.e. remove --enable-osxipconfig configure option.
       Added 'dir' flag to "crl-verify" (see man page for info).
       Added new "extra-certs" and "verify-hash" options
       Fixed compile issues on Windows.
       Added --enable-lzo-stub configure option to build an OpenVPN client without LZO
       Added optional journal directory argument to "port-share" directive
       Reduce log verbosity at level 3, with a focus on removing excessive log verbosity generated by port-share activity.
       env_filter_match now includes the serial number of all certs in chain
       Added support for static challenge/response protocol.
       r7316 fixes.
       Added redirect-gateway block-local flag, with support for Linux, Mac OS X
       Extended x509-track to allow SHA1 certificate hash to be extracted
       Added "management-query-remote" directive (client) to allow the management interface to override the "remote" directive.
       Version 2.1.5.
       Fixed MSVC compile error related to r7408.
       Redact "echo" directive strings from log, since these strings (going forward) could conceivably contain security-sensitive data.
       Modified sanitize_control_message to remove redacted data from control string rather than blotting it out with "_" chars.
       Changed CC_PRINT character class to allow UTF-8 chars.
       Increased the --verb threshold for "PID_ERR replay" messages to 4 from 3.
       Fixed issue where redirect-gateway block-local code was not correctly calculating...
       CC_PRINT character class now allows any 8-bit character value >= 32.
       "status" management interface command (version >= 2) will now include the username for each connected user.
       Minor fix to CC_PRINT char class
       Fixed management interface bug where >FATAL notifications were not being output properly
       Raised D_PID_DEBUG_LOW from level 3 to 4 to reduce replay error verbosity at level 3.
       Added "memstats" option to maintain real-time operating stats in a memory-mapped file.
       Fixed client issues with DHCP Router option extraction/deletion when using layer 2 with DHCP proxy:
       Allow "tap-win32 dynamic <offset>" to be used in topology subnet mode.
       Added support for "on-link" routes on Linux client
 
 Jan Just Keijser (1):
       Made some options connection-entry specific
 
 Joe Patterson (1):
       common_name passing in auth_pam plugin
 
 JuanJo Ciarlante (40):
       * rebased openvpn-2.1_rc1b.jjo.20061206.d.patch
       * created getaddr6(), use it from resolve_remote()
       * migrated all getaddrinfo() to getaddr6
       * socket.c: use USE_PF_INET6 in switch constructs to actually toss them out,
       * support --disable-ipv6 build properly:
       * important fix for tcp6 reconnection was incorrectly creating a PF_INET socket
       * added README.ipv6.txt
       * fixed win32 non-ipv6 build
       * ipv6 on win32 "milestone": 1st snapshot that passes all unittests
       * document ipv6 milestone status
       * doc update w/unittests results
       * make possible to x-compile openvpn/win32 in Linux
       * correctly setup hints.ai_socktype for getaddrinfo(), althought sorta hacky, see TODO.ipv6.
       * renamed README.ipv6{.txt,}
       * updated {README,TODO}.ipv6 from feedback at openvpn-devel mlist
       * init.c: document the ENABLE_MANAGEMENT place to work on
       * init.c: small in-doc tweaks
       * fix multi-tcp crash (corrected assertion)
       * TODO.ipv6 update
       * socket.c: better buf logic in print_sockaddr_ex
       * fixed segfault for undef address family in print_sockaddr_ex (thanks Marcel!)
       * doc updates
       * openbsd: no IFF_MULTICAST, #ifdef around it
       * no new funcionality, just small cleanups
       * (prototype) fix for supporting "redirect-gateway" for tunneled ipv4 over ipv6 endpoints
       * polished redirect-gateway (ipv4 on ipv6 endpoints) support
       * updated doc
       * fix --disable-ipv6 build
       * doc updates
       * rebased to v2.1.1 release
       * undo mroute.c changes related to ipv6 payload
       * fix --multihome for ipv4
       * fix --multihome for ipv6
       * ipv6-0.4.14: fix xinetd usage
       * ipv6-0.4.15: add --multihome support to xBSD
       * ipv6-0.4.15b: rebase over openvpn-testing-master
       * ipv6-0.4.16: fix mingw32 build
       * make ipv6_payload compile under windowze
       USE_PF_INET6 by default for v2.3
       fix ipv6 compilation under macosx >= 1070 - v3
 
 Markus Koetter (1):
       Add extv3 X509 field support to --x509-username-field
 
 Matthew L. Creech (1):
       Fix 2.2.0 build failure when management interface disabled
 
 Matthias Andree (1):
       Skip rather than fail test in addressless FreeBSD jails.
 
 Robert Fischer (8):
       Update man page with info about --capath
       Update man page with info about --connect-timeout
       Added info about --show-proxy-settings
       Documented --x509-username-field option
       Documented --errors-to-stderr option
       Documented --push-peer-info option
       Update man page with info about --remote-random-hostname
       Added man page entry for --management-client
 
 Samuli Seppänen (19):
       Add man page entry for --redirect-private
       Change all CRLF linefeeds to LF linefeeds
       Fix a bug in devcon source code handling
       Removed Win2k from supported platforms list in INSTALL and win/openvpn.nsi
       Fixed copying of tapinstall.exe to dist/bin when using prebuilt TAP-drivers
       Fixed a bug with GUI icon deletion on upgrade from 2.2-RC or earlier
       Fix a build-ca issue on Windows
       Add new openssl.cnf to easy-rsa/Windows
       Updated "easy-rsa" for OpenSSL 1.0.0
       Made domake-win builds to use easy-rsa/2.0/openssl-1.0.0.cnf
       Fixes to easy-rsa/2.0
       Merged TODO.IPv6 with TODO.ipv6 and README.IPv6 with README.ipv6
       Fixed a number of fatal build errors on Visual Studio 2008
       Fix a Visual Studio 2008 build issue in socket.c
       Additional Visual Studio 2008 build fixes to tun.c
       Fixed a typo in win32.h that prevented building with Visual Studio
       Fixed a regression causing VS2008/Python build failure
       Fix a Visual Studio 2008 build error in tun.c
       Fix a Visual Studio 2008 build error in options.c
 
 Simon Matter (1):
       Fix issues with some older GCC compilers
 
 Stefan Hellermann (2):
       plugin.h: update prototype of plugin_call dummy in !ENABLE_PLUGIN case
       Fixed typo in plugin.h
 
 chantra (1):
       Clarify --tmp-dir option
 
 smos (1):
       Change the netsh.exe command from "add" to "set".
 

 2011.12.25 -- Version 2.x-master
 James Yonan (1):
       Added support for "on-link" routes on Linux client -- these are
       routes where the gateway is specified as an interface rather than
       an address.  This allows redirect-gateway to work on Linux clients
       whose connection to the internet is via a point-to-point link
       such as PPP.
 
       Note that at the moment, this capability is incompatible with
       the "redirect-gateway block-local" directive -- this is because
       the block-local directive blocks all traffic from the local LAN
       except for the local and gateway addresses.  Since a PPP link
       is essentially a subnet of two addresses, local and remote (i.e.
       gateway), the set of addresses that would be blocked by block-local
       is empty.  Therefore, the "redirect-gateway block-local" directive
       will be ignored on PPP links.
 
       To view the OpenVPN client's current determination of the default
       gateway, use this command:
 
         ./openvpn --show-gateway
 

 2011.03.24 -- Version 2.2-RC2
 Alon Bar-Lev (1):
       Windows cross-compile cleanup
 
 David Sommerseth (2):
       Open log files as text files on Windows
       Clarify default value for the --inactive option.
 
 Gert Doering (1):
       Implement IPv6 in TUN mode for Windows TAP driver.
 
 Samuli Seppänen (6):
       Added support for prebuilt TAP-drivers. Automated embedding manifests.
       Fixes to win/openvpn.nsi
       Replaced config-win32.h with win/config.h.in
       Updated INSTALL-win32.txt
       Fixes to Makefile.am
       Clarified --client-config-dir section on the man-page.
 
 Ville Skyttä (1):
       Fix line continuation in chkconfig init script description.
 

 2011.02.28 -- Version 2.2-RC

 David Sommerseth (3):

       Make the --x509-username-field feature an opt-in feature
       Fix compiler warning when compiling against OpenSSL 1.0.0

       Fix packaging of config-win32.h and service-win32/msvc.mak

 
 James Yonan (1):
       Minor addition of logging info before and after execution of Windows net commands.
 
 Matthias Andree (1):
       Change variadic macros to C99 style.
 
 Samuli Seppänen (15):
       Added ENABLE_PASSWORD_SAVE to config-win32.h
       Added a nmake makefile for openvpnserv.exe building
       Moved TAP-driver version info to version.m4. Cleaned up win/settings.in.
       Added helper functionality to win/wb.py
       Added support for viewing config-win32.h paramters to win/show.py
       Added comments and made small modifications to win/msvc.mak.in
       Added command-line switch to win/build_all.py to skip TAP driver building
       Added configure.h and version.m4 variable parsing to win/config.py
       Added openvpnserv.exe building to win/build.py
       Added comments to win/build_ddk.py
       Several modifications to win/make_dist.py to allow building the NSI installer
       Copied install-win32/setpath.nsi to win/setpath.nsi
       Added first version of NSI installer script to win/openvpn.nsi
       Changes to buildsystem patchset
       Temporary snprintf-related fix to service-win32/openvpnserv.c

 2010.11.25 -- Version 2.2-beta5
 
 Samuli Seppänen (1):
       Fixed an issue causing a build failure with MS Visual Studio 2008.
 

 2010.11.18 -- Version 2.2-beta4

 
 David Sommerseth (10):
       Clarified --explicit-exit-notify man page entry
       Clean-up: Remove pthread and mutex locking code
       Clean-up: Remove more dead and inactive code paths
       Clean-up: Removing useless code - hash related functions
       Use stricter snprintf() formatting in socks_username_password_auth() (v3)
       Fix compiler warnings about not used dummy() functions
       Fixed potential misinterpretation of boolean logic
       Only add some functions when really needed
       Removed functions not being used anywhere
       Merged add_bypass_address() and add_host_route_if_nonlocal()
 
 Gert Doering (3):
       Integrate support for TAP mode on Solaris, written by Kazuyoshi Aizawa <admin2@whiteboard.ne.jp>.
       Make "topology subnet" work on Solaris
       Improved man page entry for script_type
 
 James Yonan (5):
       Fixed initialization bug in route_list_add_default_gateway (Gert Doering).
       Implement challenge/response authentication support in client mode
       Make base64.h have the same conditional compilation expression as base64.c.
       Fixed compiling issues when using --disable-crypto
       In verify_callback, the subject var should be freed by OPENSSL_free, not free
 
 Jesse Young (1):
       Remove hardcoded path to resolvconf
 
 Lars Hupel (1):
       Add HTTP/1.1 Host header
 
 Pierre Bourdon (1):
       Adding support for SOCKS plain text authentication
 
 Samuli Seppänen (2):
       Added check for variable CONFIGURE_DEFINES into options.c
       Added command-line option parser and an unsigned build option to build_all.py
 

 2010.08.21 -- Version 2.2-beta3
 
 * Attempt to fix issue where domake-win build system was not properly
   signing drivers and .exe files.
 
   Added win/tap_span.py for building multiple versions of the TAP driver
   and tapinstall binaries using different DDK versions to span from Win2K
   to Win7 and beyond.
 
 * Community patches
   David Sommerseth (2):
       Test framework improvment - Do not FAIL if t_client.rc is missing
       More t_client.sh updates - exit with SKIP when we want to skip
 
   Gert Doering (4):
       Fix compile problems on NetBSD and OpenBSD
       Fix <net/if.h> compile time problems on OpenBSD for good
       full "VPN client connect" test framework for OpenVPN
       Build t_client.sh by configure at run-time.
 
   chantra (1):
       Fixes openssl-1.0.0 compilation warning
 
 2010.08.16 -- Version 2.2-beta2

 
 * Windows security issue:
   Fixed potential local privilege escalation vulnerability in
   Windows service. The Windows service did not properly quote the
   executable filename passed to CreateService.  A local attacker
   with write access to the root directory C:\ could create an
   executable that would be run with the same privilege level as
   the OpenVPN Windows service.  However, since non-Administrative
   users normally lack write permission on C:\, this vulnerability
   is generally not exploitable except on older versions of Windows
   (such as Win2K) where the default permissions on C:\ would allow
   any user to create files there.
   Credit:  Scott Laurie, MWR InfoSecurity
 
 * Added Python-based based alternative build system for Windows using
   Visual Studio 2008 (in win directory).
 
 * When aborting in a non-graceful way, try to execute do_close_tun in
   init.c prior to daemon exit to ensure that the tun/tap interface is
   closed and any added routes are deleted.
 
 * Fixed an issue where AUTH_FAILED was not being properly delivered
   to the client when a bad password is given for mid-session reauth,
   causing the connection to fail without an error indication.
 
 * Don't advance to the next connection profile on AUTH_FAILED errors.
 
 * Fixed an issue in the Management Interface that could cause
   a process hang with 100% CPU utilization in --management-client
   mode if the management interface client disconnected at the
   point where credentials are queried.
 
 * Fixed an issue where if reneg-sec was set to 0 on the client,
   so that the server-side value would take precedence,
   the auth_deferred_expire_window function would incorrectly
   return a window period of 0 seconds.  In this case, the
   correct window period should be the handshake window
   period.
 
 * Modified ">PASSWORD:Verification Failed" management interface
   notification to include a client reason string:
 
     >PASSWORD:Verification Failed: 'AUTH_TYPE' ['REASON_STRING']
 
 * Enable exponential backoff in reliability layer
   retransmits.
 
 * Set socket buffers (SO_SNDBUF and SO_RCVBUF) immediately after
   socket is created rather than waiting until after connect/listen.
 
 * Management interface performance optimizations:
 
   1. Added env-filter MI command to perform filtering on env vars
      passed through as a part of --management-client-auth
 
   2. man_write will now try to aggregate output into larger blocks
      (up to 1024 bytes) for more efficient i/o
 
 * Fixed minor issue in Windows TAP driver DEBUG builds
   where non-null-terminated unicode strings were being
   printed incorrectly.
 
 * Fixed issue on Windows with MSVC compiler, where TCP_NODELAY support
   was not being compiled in.
 
 * Proxy improvements:
 
   Improved the ability of http-auth "auto" flag to dynamically detect
   the auth method required by the proxy.
 
   Added http-auth "auto-nct" flag to reject weak proxy auth methods.
 
   Added HTTP proxy digest authentication method.
 
   Removed extraneous openvpn_sleep calls from proxy.c.
 
 * Implemented http-proxy-override and http-proxy-fallback directives to make it
   easier for OpenVPN client UIs to start a pre-existing client config file with
   proxy options, or to adaptively fall back to a proxy connection if a direct
   connection fails.
 
 * Implemented a key/value auth channel from client to server.
 
 * Fixed issue where bad creds provided by the management interface
   for HTTP Proxy Basic Authentication would go into an infinite
   retry-fail loop instead of requerying the management interface for
   new creds.
 
 * Added support for MSVC debugging of openvpn.exe in settings.in:
 
   # Build debugging version of openvpn.exe
   !define PRODUCT_OPENVPN_DEBUG
 
 * Implemented multi-address DNS expansion on the network field of route
   commands.
 
   When only a single IP address is desired from a multi-address DNS
   expansion, use the first address rather than a random selection.
 
 * Added --register-dns option for Windows.
 
   Fixed some issues on Windows with --log, subprocess creation
   for command execution, and stdout/stderr redirection.
 
 * Fixed an issue where application payload transmissions on the
   TLS control channel (such as AUTH_FAILED) that occur during
   or immediately after a TLS renegotiation might be dropped. 
 
 * Added warning about tls-remote option in man page.
 

 2009.12.11 -- Version 2.1.1
 
 * Fixed some breakage in openvpn.spec (which is required to build an
   RPM distribution) where it was referencing a non-existent
   subdirectory in the tarball, causing it to fail (patch from
   David Sommerseth).
 

 2009.12.11 -- Version 2.1.0
 
 * Fixed a couple issues in sample plugins auth-pam.c and down-root.c.
   (1) Fail gracefully rather than segfault if calloc returns NULL.
   (2) The openvpn_plugin_abort_v1 function can potentially be called
   with handle == NULL.  Add code to detect this case, and if  so, avoid
   dereferencing pointers derived from handle  (Thanks to David
   Sommerseth for finding this bug).
 
 * Documented "multihome" option in the man page.
 

 2009.11.20 -- Version 2.1_rc22
 
 * Fixed a client-side bug on Windows that occurred when the
   "dhcp-pre-release" or "dhcp-renew" options were combined with
   "route-gateway dhcp".  The release/renew would not occur
   because the Windows DHCP renew function is blocking and
   therefore must be called from another process or thread
   so as not to stall the tunnel.
 
 * Added a hard failure when peer provides a certificate chain
   with depth > 16.  Previously, a warning was issued.
 

 2009.11.12 -- Version 2.1_rc21
 
 * Rebuilt OpenVPN Windows installer with OpenSSL 0.9.8l to address
   CVE-2009-3555.  Note that OpenVPN has never relied on the session
   renegotiation capabilities that are built into the SSL/TLS protocol,
   therefore the fix in OpenSSL 0.9.8l (disable SSL/TLS renegotiation
   completely) will not adversely affect OpenVPN mid-session SSL/TLS
   renegotation or any other OpenVPN capabilities.
 
 * Added additional session renegotiation hardening.  OpenVPN has always
   required that mid-session renegotiations build up a new SSL/TLS
   session from scratch.  While the client certificate common name is
   already locked against changes in mid-session TLS renegotiations, we
   now extend this locking to the auth-user-pass username as well as all
   certificate content in the full client certificate chain.
 

 2009.10.01 -- Version 2.1_rc20
 
 * Fixed a bug introduced in 2.1_rc17 (svn r4436) where using the
   redirect-gateway option by itself, without any extra parameters,
   would cause the option to be ignored.
 
 * Fixed build problem when ./configure --disable-server is used.
 
 * Fixed ifconfig command for "topology subnet" on FreeBSD (Stefan Bethke).
 
 * Added --remote-random-hostname option.
 
 * Added "load-stats" management interface command to get global server
   load statistics.
 
 * Added new ./configure flags:
 
   --disable-def-auth      Disable deferred authentication
   --disable-pf            Disable internal packet filter
 
 * Added "setcon" directive for interoperability with SELinux (Sebastien
   Raveau).
 
 * Optimized PUSH_REQUEST handshake sequence to shave several seconds
   off of a typical client connection initiation.
 
 * The maximum number of "route" directives (specified in the config
   file or pulled from a server) can now be configured via the new
   "max-routes" directive.
 
 * Eliminated the limitation on the number of options that can be pushed
   to clients, including routes.  Previously, all pushed options needed
   to fit within a 1024 byte options string.
 
 * Added --server-poll-timeout option : when polling possible remote
   servers to connect to in a round-robin fashion, spend no more than
   n seconds waiting for a response before trying the next server.
 
 * Added the ability for the server to provide a custom reason string
   when an AUTH_FAILED message is returned to the client.  This
   string can be set by the server-side managment interface and read
   by the client-side management interface.
 
 * client-kill management interface command, when issued on server, will
   now send a RESTART message to client.
   This feature is intended to make UDP clients respond the same as TCP
   clients in the case where the server issues a RESTART message in
   order to force the client to reconnect and pull a new options/route
   list.
 

 2009.07.16 -- Version 2.1_rc19
 
 * In Windows TAP driver, refactor DHCP/ARP packet injection code to
   use a DPC (deferred procedure call) to defer packet injection until
   IRQL < DISPATCH_LEVEL, rather than calling NdisMEthIndicateReceive
   in the context of AdapterTransmit.  This is an attempt to reduce kernel
   stack usage, and prevent EXCEPTION_DOUBLE_FAULT BSODs that have been
   observed on Vista.  Updated TAP driver version number to 9.6.
 
 * In configure.ac, use datadir instead of datarootdir for compatibility
   with <autoconf-2.60.
 

 2009.06.07 -- Version 2.1_rc18
 
 * Fixed compile error on ./configure --enable-small
 
 * Fixed issue introduced in r4475 (2.1-rc17) where cryptoapi.c change
   does not build on Windows on non-MINGW32.
 

 2009.05.30 -- Version 2.1_rc17
 
 * Reduce the debug level (--verb) at which received management interface
   commands are echoed from 7 to 3.  Passwords will be filtered.
 
 * Fixed race condition in management interface recv code on
   Windows, where sending a set of several commands to the
   management interface in quick succession might cause the
   latter commands in the set to be ignored.
 
 * Increased management interface input command buffer size
   from 256 to 1024 bytes.
 
 * Minor tweaks to Windows build system.
 
 * Added "redirect-private" option which allows private subnets
   to be pushed to the client in such a way that they don't accidently
   obscure critical local addresses such as the DHCP server address and
   DNS server addresses.
 
 * Added new 'autolocal' redirect-gateway flag.  When enabled, the OpenVPN
   client will examine the routing table and determine whether (a) the
   OpenVPN server is reachable via a locally connected interface, or (b)
   traffic to the server must be forwarded through the default router.
   Only add a special bypass route for the OpenVPN server if (b) is true.
   If (a) is true, behave as if the 'local' flag is specified, and do not
   add a bypass route.
 
   The new 'autolocal' flag depends on the non-portable test_local_addr()
   function in route.c, which is currently only implemented for Windows.
   The 'autolocal' flag will act as a no-op on platforms that have not
   yet defined a test_local_addr() function.
 
 * Increased TLS_CHANNEL_BUF_SIZE to 2048 from 1024 (this will allow for
   more option content to be pushed from server to client).
 
 * Raised D_MULTI_DROPPED debug level to 4 from 3 to filter out (at debug
   levels <=3) a common and usually innocuous warning.
 
 * Fixed issue of symbol conflicts interfering with Windows CryptoAPI
   functionality (Alon Bar-Lev).
 
 * Fixed bug where the remote_X environmental variables were not being
   set correctly when the 'local' option is specifed.

 2009.05.17 -- Version 2.1_rc16
 
 * Windows installer changes:
 
   1. ifdefed out the check Windows version code which is causing
   problems on Windows 7
 
   2. don't define SF_SELECTED if it is already defined
 
   3. Use LZMA instead of BZIP2 compression for better compression
 
   4. Upgraded OpenSSL to 0.9.8k
 
 * Added the ability to read the configuration file
   from stdin, when "stdin" is given as the config
   file name.
 
 * Allow "management-client" directive to be used
   with unix domain sockets.
 
 * Added errors-to-stderr option.  When enabled, fatal errors
   that result in the termination of the daemon will be written
   to stderr.
 
 * Added optional "nogw" (no gateway) flag to --server-bridge
   to inhibit the pushing of the route-gateway parameter to
   clients.
 
 * Added new management interface command "pid" to show the
   process ID of the current OpenVPN process (Angelo Laub).
 
 * Fixed issue where SIGUSR1 restarts would fail if private
   key was specified as an inline file.
 
 * Added daemon_start_time and daemon_pid environmental variables.
 
 * In management interface, added new ">CLIENT:ESTABLISHED" notification.
 
 * Build fixes:
 
   1. Fixed some issues with C++ style comments that leaked into the code.
 
   2. Updated configure.ac to work on MinGW64.
 
   3. Updated common.h types for _WIN64.
 
   4. Fixed issue involving an #ifdef in a macro reference that breaks early gcc
      compilers.
 
   5. In cryptoapi.c, renamed CryptAcquireCertificatePrivateKey to
      OpenVPNCryptAcquireCertificatePrivateKey to work around
      a symbol conflict in MinGW-5.1.4.
 

 2008.11.19 -- Version 2.1_rc15
 
 * Fixed issue introduced in 2.1_rc14 that may cause a
   segfault when a --plugin module is used.
 
 * Added server-side --opt-verify option: clients that connect
   with options that are incompatible with those of the server
   will be disconnected (without this option, incompatible
   clients would trigger a warning message in the server log
   but would not be disconnected).
 
 * Added --tcp-nodelay option: Macro that sets TCP_NODELAY socket
   flag on the server as well as pushes it to connecting clients.
 
 * Minor options check fix: --no-name-remapping is a
   server-only option and should therefore generate an
   error when used on the client.
 
 * Added --prng option to control PRNG (pseudo-random
   number generator) parameters.  In previous OpenVPN
   versions, the PRNG was hardcoded to use the SHA1
   hash.  Now any OpenSSL hash may be used.  This is
   part of an effort to remove hardcoded references to
   a specific cipher or cryptographic hash algorithm.
 
 * Cleaned up man page synopsis.
 

 2008.11.16 -- Version 2.1_rc14

 
 * Added AC_GNU_SOURCE to configure.ac to enable struct ucred,
   with the goal of fixing a build issue on Fedora 9 that was
   introduced in 2.1_rc13.
 

 * Added additional method parameter to --script-security to preserve
   backward compatibility with system() call semantics used in OpenVPN
   2.1_rc8 and earlier.  To preserve backward compatibility use:
 
     script-security 3 system
 

 * Added additional warning messages about --script-security 2
   or higher being required to execute user-defined scripts or
   executables.
 
 * Windows build system changes:
 
   Modified Windows domake-win build system to write all openvpn.nsi
   input files to gen, so that gen can be disconnected from
   the rest of the source tree and makensis openvpn.nsi will
   still function correctly.
 
   Added additional SAMPCONF_(CA|CRT|KEY) macros to settings.in
   (commented out by default).
 
   Added optional files SAMPCONF_CONF2 (second sample configuration
   file) and SAMPCONF_DH (Diffie-Helman parameters) to Windows
   build system, and may be defined in settings.in.
 
 * Extended Management Interface "bytecount" command
   to work when OpenVPN is running as a server.
   Documented Management Interface "bytecount" command in
   management/management-notes.txt.
 
 * Fixed informational message in ssl.c to properly indicate
   deferred authentication.
 
 * Added server-side --auth-user-pass-optional directive, to allow
   connections by clients that do not specify a username/password, when a
   user-defined authentication script/module is in place (via
   --auth-user-pass-verify, --management-client-auth, or a plugin module).
 
 * Changes to easy-rsa/2.0/pkitool and related openssl.cnf:
 
   Calling scripts can set the KEY_NAME environmental variable to set
   the "name" X509 subject field in generated certificates.
 
   Modified pkitool to allow flexibility in separating the Common Name
   convention from the cert/key filename convention.
 
   For example:
 
   KEY_CN="James's Laptop" KEY_NAME="james" ./pkitool james
 
   will create a client certificate/key pair of james.crt/james.key
   having a Common Name of "James's Laptop" and a Name of "james".
 
 * Added --no-name-remapping option to allow Common Name, X509 Subject,
   and username strings to include any printable character including
   space, but excluding control characters such as tab, newline, and
   carriage-return (this is important for compatibility with external
   authentication systems).
 
   As a related change, added --status-version 3 format (and "status 3"
   in the management interface) which uses the version 2 format except
   that tabs are used as delimiters instead of commas so that there
   is no ambiguity when parsing a Common Name that contains a comma.
 
   Also, save X509 Subject fields to environment, using the naming
   convention:
 
   X509_{cert_depth}_{name}={value}
 
   This is to avoid ambiguities when parsing out the X509 subject string
   since "/" characters could potentially be used in the common name.
 
 * Fixed some ifconfig-pool issues that precluded it from being combined
   with --server directive.
 
   Now, for example, we can configure thusly:
 
     server 10.8.0.0 255.255.255.0 nopool
     ifconfig-pool 10.8.0.2 10.8.0.99 255.255.255.0
 
   to have ifconfig-pool manage only a subset
   of the VPN subnet.
 
 * Added config file option "setenv FORWARD_COMPATIBLE 1" to relax
   config file syntax checking to allow directives for future OpenVPN
   versions to be ignored.
 

 2008.10.07 -- Version 2.1_rc13
 
 * Bundled OpenSSL 0.9.8i with Windows installer.
 
 * Management interface can now listen on a unix
   domain socket, for example:
 
     management /tmp/openvpn unix
 
   Also added management-client-user and management-client-group
   directives to control which processes are allowed to connect
   to the socket.
 
 * Copyright change to OpenVPN Technologies, Inc.
 

 2008.09.23 -- Version 2.1_rc12
 
 * Patched Makefile.am so that the new t_cltsrv-down.sh script becomes
   part of the tarball (Matthias Andree).
 
 * Fixed --lladdr bug introduced in 2.1-rc9 where input validation code
   was incorrectly expecting the lladdr parameter to be an IP address
   when it is actually a MAC address (HoverHell).

 2008.09.14 -- Version 2.1_rc11
 
 * Fixed a bug that can cause SSL/TLS negotiations in UDP mode
   to fail if UDP packets are dropped.
 

 2008.09.10 -- Version 2.1_rc10
 
 * Added "--server-bridge" (without parameters) to enable
   DHCP proxy mode:  Configure server mode for ethernet
   bridging using a DHCP-proxy, where clients talk to the
   OpenVPN server-side DHCP server to receive their IP address
   allocation and DNS server addresses.
 
 * Added "--route-gateway dhcp", to enable the extraction
   of the gateway address from a DHCP negotiation with the
   OpenVPN server-side LAN.
 
 * Fixed minor issue with --redirect-gateway bypass-dhcp or bypass-dns
   on Windows.  If the bypass IP address is 0.0.0.0 or 255.255.255.255,
   ignore it.
 
 * Warn when ethernet bridging that the IP address of the bridge adapter
   is probably not the same address that the LAN adapter was set to
   previously.
 
 * When running as a server, warn if the LAN network address is
   the all-popular 192.168.[0|1].x, since this condition commonly
   leads to subnet conflicts down the road.
 
 * Primarily on the client, check for subnet conflicts between
   the local LAN and the VPN subnet.
 
 * Added a 'netmask' parameter to get_default_gateway, to return
   the netmask of the adapter containing the default gateway.
   Only implemented on Windows so far.  Other platforms will
   return 255.255.255.0.  Currently the netmask information is
   only used to warn about subnet conflicts.
 
 * Minor fix to cryptoapi.c to not compile itself unless USE_CRYPTO
   and USE_SSL flags are enabled (Alon Bar-Lev).
 
 * Updated openvpn/t_cltsrv.sh (used by "make check") to conform to new
   --script-security rules.  Also adds retrying if the addresses are in
   use (Matthias Andree).
 
 * Fixed build issue with ./configure --disable-socks --disable-http.
 
 * Fixed separate compile errors in options.c and ntlm.c that occur
   on strict C compilers (such as old versions of gcc) that require
   that C variable declarations occur at the start of a {} block,
   not in the middle.
 
 * Workaround bug in OpenSSL 0.9.6b ASN1_STRING_to_UTF8, which
   the new implementation of extract_x509_field_ssl depends on.
 
 * LZO compression buffer overflow errors will now invalidate
   the packet rather than trigger a fatal assertion.
 
 * Fixed minor compile issue in ntlm.c (mid-block declaration).
 
 * Added --allow-pull-fqdn option which allows client to pull DNS names
   from server (rather than only IP address) for --ifconfig, --route, and
   --route-gateway.  OpenVPN versions 2.1_rc7 and earlier allowed DNS names
   for these options to be pulled and translated to IP addresses by default.
   Now --allow-pull-fqdn will be explicitly required on the client to enable
   DNS-name-to-IP-address translation of pulled options.
 
 * 2.1_rc8 and earlier did implicit shell expansion on script
   arguments since all scripts were called by system().
   The security hardening changes made to 2.1_rc9 no longer
   use system(), but rather use the safer execve or CreateProcess
   system calls.  The security hardening also introduced a
   backward incompatibility with 2.1_rc8 and earlier in that
   script parameters were no longer shell-expanded, so
   for example:
 
     client-connect "docc CLIENT-CONNECT"
 
   would fail to work because execve would try to execute
   a script called "docc CLIENT-CONNECT" instead of "docc"
   with "CLIENT-CONNECT" as the first argument.
 
   This patch fixes the issue, bringing the script argument
   semantics back to pre 2.1_rc9 behavior in order to preserve
   backward compatibility while still using execve or CreateProcess
   to execute the script/executable.
 
 * Modified ip_or_dns_addr_safe, which validates pulled DNS names,
   to more closely conform to RFC 3696:
 
   (1) DNS name length must not exceed 255 characters
 
   (2) DNS name characters must be limited to alphanumeric,
       dash ('-'), and dot ('.')
 
 * Fixed bug in intra-session TLS key rollover that was introduced with
   deferred authentication features in 2.1_rc8.
 

 2008.07.31 -- Version 2.1_rc9
 

 * Security Fix -- affects non-Windows OpenVPN clients running

   OpenVPN 2.1-beta14 through 2.1-rc8 (OpenVPN 2.0.x clients are NOT
   vulnerable nor are any versions of the OpenVPN server vulnerable).
   An OpenVPN client connecting to a malicious or compromised
   server could potentially receive an "lladdr" or "iproute" configuration
   directive from the server which could cause arbitrary code execution on
   the client. A successful attack requires that (a) the client has agreed
   to allow the server to push configuration directives to it by including
   "pull" or the macro "client" in its configuration file, (b) the client

   successfully authenticates the server, (c) the server is malicious or has

   been compromised and is under the control of the attacker, and (d) the
   client is running a non-Windows OS.  Credit: David Wagner.

   CVE-2008-3459

 
 * Miscellaneous defensive programming changes to multiple
   areas of the code.  In particular, use of the system() call
   for calling executables such as ifconfig, route, and
   user-defined scripts has been completely revamped in favor
   of execve() on unix and CreateProcess() on Windows.
 

 * In Windows build, package a statically linked openssl.exe to work around
   observed instabilities in the dynamic build since the migration to
   OpenSSL 0.9.8h.
 

 2008.06.11 -- Version 2.1_rc8
 
 * Added client authentication and packet filtering capability
   to management interface.  In addition, allow OpenVPN plugins
   to take advantage of deferred authentication and packet
   filtering capability.
 
 * Added support for client-side connection profiles.
 
 * Fixed unbounded memory growth bug in environmental variable
   code that could have caused long-running OpenVPN sessions
   with many TLS renegotiations to incrementally
   increase memory usage over time.
 
 * Windows release now packages openssl-0.9.8h.
 
 * Build system changes -- allow building on Windows using
   autoconf/automake scripts (Alon Bar-Lev).
 
 * Changes to Windows build system to make it easier to do
   partial builds, with a reduced set of prerequisites,
   where only a subset of OpenVPN installer
   components are built.  See ./domake-win comments.
 
 * Cleanup IP address for persistence interfaces for tap and also
   using ifconfig, gentoo#209055 (Alon Bar-Lev).
 
 * Fall back to old version of extract_x509_field for OpenSSL 0.9.6.
 
 * Clarified tcp-queue-limit man page entry (Matti Linnanvuori).
 
 * Added new OpenVPN icon and installer graphic.
 
 * Minor pkitool changes.
 
 * Added --pkcs11-id-management option, which will cause OpenVPN to
   query the management interface via the new NEED-STR asynchronous
   notification query to get additional PKCS#11 options (Alon Bar-Lev).
 
 * Added NEED-STR management interface asynchronous query and
   "needstr" management interface command to respond to the query
   (Alon Bar-Lev).
 
 * Added Dragonfly BSD support (Francis-Gudin).
 
 * Quote device names before passing to up/down script (Josh Cepek).
 
 * Bracketed struct openvpn_pktinfo with #pragma pack(1) to
   prevent structure padding from causing an incorrect length
   to be returned by sizeof (struct openvpn_pktinfo) on 64-bit
   platforms.
 
 * On systems that support res_init, always call it
   before calling gethostbyname to ensure that
   resolver configuration state is current.
 
 * Added NTLMv2 proxy support (Miroslav Zajic).
 
 * Fixed an issue in extract_x509_field_ssl where the extraction
   would fail on the first field of the subject name, such as
   the common name in:  /CN=foo/emailAddress=foo@bar.com
 
 * Made "Linux ip addr del failed" error nonfatal.
 
 * Amplified --client-cert-not-required warning.
 
 * Added #pragma pack to proto.h.
 

 2008.01.29 -- Version 2.1_rc7
 
 * Added a few extra files that exist in the svn repo but were
   not being copied into the tarball by make dist.
 
 * Fixup null interface on close, don't use ip addr flush (Alon Bar-Lev).
 

 2008.01.24 -- Version 2.1_rc6
 
 * Fixed options checking bug introduced in rc5 where legitimate configuration
   files might elicit the error: "Options error: Parameter pkcs11_private_mode
   can only be specified in TLS-mode, i.e. where --tls-server or --tls-client
   is also specified."
 	

 2008.01.23 -- Version 2.1_rc5
 
 * Fixed Win2K TAP driver bug that was introduced by Vista fixes,
   incremented driver version to 9.4.
 
 * Windows build system changes:
 
   Incremented included OpenSSL version to openssl-0.9.7m.
 
   Updated openssl.patch for openssl-0.9.7m and added some
   brief usage comments to the head of the patch.
 
   Added build-pkcs11-helper.sh for building the pkcs11-helper
   library.
 
   Integrated inclusion of pkcs11-helper into Windows build
   system.
 
   Upgraded TAP build scripts to use WDK 6001.17121
   (Windows 2008 Server pre-RTM).
 
 * Windows installer changes:
 
   Clean up the start menu folder.
 
   Allow for a site-specific sample configuration file and keys
   to be included in a custom installer (see SAMPCONF macros
   in settings.in). 
 
   New icon (temporary).
 
 * Added "forget-passwords" command to the management interface
   (Alon Bar-Lev).
 
 * Added --management-signal option to signal SIGUSR1 when the
   management interface disconnects (Alon Bar-Lev).
 
 * Modified command line and config file parser to allow
   quoted strings using single quotes ('') (Alon Bar-Lev).
 
 * Use pkcs11-helper as external library, can be downloaded from
   https://www.opensc-project.org/pkcs11-helper (Alon Bar-Lev).
 
 * Fixed interim memory growth issue in TCP connect loop where
   "TCP: connect to %s failed, will try again in %d seconds: %s"
   is output.
 
 * Fixed bug in epoll driver in event.c, where the lack of a
   handler for EPOLLHUP could cause 99% CPU usage.
 
 * Defined ALLOW_NON_CBC_CIPHERS for people who don't
   want to use a CBC cipher for OpenVPN's data channel.
 
 * Added PLUGIN_LIBDIR preprocessor string to prepend a default
   plugin directory to the dlopen search list when the user
   specifies the basename of the plugin only (Marius Tomaschewski).
 
 * Rewrote extract_x509_field and modified COMMON_NAME_CHAR_CLASS
   to allow forward slash characters ("/") in the X509 common name
   (Pavel Shramov).
 
 * Allow OpenVPN to run completely unprivileged under Linux
   by allowing openvpn --mktun to be used with --user and --group
   to set the UID/GID of the tun device node.  Also added --iproute
   option to allow an alternative command to be executed in place
   of the default iproute2 command (Alon Bar-Lev).
 
 * Fixed --disable-iproute2 in ./configure to actually disable
   iproute2 usage (Alon Bar-Lev).
 
 * Added --management-forget-disconnect option -- forget
   passwords when management session disconnects (Alon Bar-Lev).
 	

 2007.04.25 -- Version 2.1_rc4
 
 * Worked out remaining issues with TAP driver signing
   on Vista x64.  OpenVPN will now run on Vista x64
   with driver signing enforcement enabled.
 
 * Fixed 64-bit portability bug in time_string function
   (Thomas Habets).
 

 2007.04.22 -- Version 2.1_rc3
 
 * Additional fixes to TAP driver for Windows x64.  Driver
   now runs successfully on Vista x64 if driver signing
   enforcement is disabled.
 	
 * The Windows Installer and TAP driver are now signed by

   OpenVPN Solutions LLC (in addition to the usual GnuPG
   signatures).
 
 * Added OpenVPN GUI (Mathias Sundman version) as install
   option in Windows installer.

 
 * Clean up configure on FreeBSD for recent autotool versions
   that require that all .h files have to be compiled.
   Also, FreeBSD install does not support GNU long options
   which the Makefile in easy-rsa/2.0 uses (not checked the
   others as we don't install those on Gentoo) (Roy Marples).
 
 * Added additional scripts to easy-rsa/Windows for working
   with password-protected keys; also add -extensions server
   option when generating server cert via
   build-key-server-pass.bat (Daniel Zauft).
 	

 2007.02.27 -- Version 2.1_rc2
 
 * auth-pam change:  link with -lpam rather
   than dlopen (Roy Marples).
 
 * Prevent SIGUSR1 or SIGHUP from causing program
   exit from initial management hold.
 
 * SO_REUSEADDR should not be set on Windows TCP sockets
   because it will cause bind to succeed on port conflicts.
 
 * Added time_ascii, time_duration, and time_unix
   environmental variables for plugins and callback
   scripts.
 
 * Fixed issue where OpenVPN does not apply the --txqueuelen option
   to persistent interfaces made with --mktun (Roy Marples).
 
 * Attempt at rational signal handling when in the
   management hold state.  During management hold, ignore
   SIGUSR1/SIGHUP signals thrown with the "signal" command.
   Also, "signal" command will now apply remapping as
   specified with the --remap-usr1 option.
   When a signal entered using the "signal" command from a management
   hold is ignored, output: >HOLD:Waiting for hold release
 
 * Fixed issue where struct env_set methods that
   change the value of an existing name=value pair
   would delay the freeing of the memory held by
   the previous name=value pair until the underlying
   client instance object is closed.
   This could cause a server that handles long-term
   client connections, resulting in many periodic calls
   to verify_callback, to needlessly grow the env_set
   memory allocation until the underlying client instance
   object is closed.
 
 * Renamed TAP-Win32 driver from tap0801.sys to tap0901.sys
   to reflect the fact that Vista has blacklisted the tap0801.sys
   file name due to previous compatibility issues which have now
   been resolved.  TAP-Win32 major/minor version number is now 9/1.
 
 * Windows installer will delete a previously installed
   tap0801.sys TAP driver before installing tap0901.sys.
 
 * Added code to Windows installer to fail gracefully on 64 bit
   installs until 64-bit TAP driver issues can be resolved.
 
 * Added code to Windows installer to fail gracefully on
   versions of Windows which are not explicitly supported.
 
 * The Windows version will now use a default route-delay
   of 5 seconds to deal with an apparent routing table race
   condition on Vista.
 
 * Worked around an incompatibility in the Windows Vista
   version of CreateIpForwardEntry as described in
   http://www.nynaeve.net/?p=59
   This issue would cause route additions using the
   IP Helper API to fail on Vista.
 
 * On Windows, revert to "ip-win32 dynamic" as the default.
 

 2006.10.31 -- Version 2.1_rc1
 
 * Support recovery (return to hold) from signal at
   management password prompt.
 
 * Added workaround for OpenSC PKCS#11 bug#108
   (Alon Bar-Lev).
 

 2006.10.01 -- Version 2.1-beta16
 
 * Windows installer updated with OpenSSL 0.9.7l DLLs to fix
   published vulnerabilities.

 
 * Fixed TAP-Win32 bug that caused BSOD on Windows Vista
   (Henry Nestler).
 	
 * Autodetect 32/64 bit Windows in installer and install
   appropriate TAP driver (Mathias Sundman, Hypherion).
 	
 * Fixed bug in loopback self-test introduced
   in 2.1-beta15 where self test as invoked by
   "make check" would not properly exit after
   2 minutes (Paul Howarth).
 

 2006.09.12 -- Version 2.1-beta15
 
 * Windows installer updated with OpenSSL 0.9.7k DLLs to fix
   RSA Signature Forgery (CVE-2006-4339).
 
 * Fixed bug introduced with the --port-share directive
   (back in 2.1-beta9 which causes TLS soft resets
   (1 per hour by default) in TCP server mode to force
   a blockage of tunnel packets and later time-out and
   restart the connection.
 

 * easy-rsa update (Alon Bar-Lev)
   Makefile (install) is now available so that
   distribs will be able to install it safely.
 
 * PKCS#11 changes: (Alon Bar-Lev) 
   - Modified ssl.c to not FATAL and return to init.c
     so auth-retry will work.
   - Modifed pkcs11-helper.c to fix some problem with
     multiple providers.
   - Added retry counter to PKCS#11 PIN hook.
   - Modified PKCS#11 PIN retry loop to return correct error
     code when PIN is incorrect.
   - Fix handling (ignoring) zero sized attributes.
   - Fix gcc-2 issues.
   - Fix openssl 0.9.6 (first version) issues.
 
 * Minor fixes of lladdr (Alon Bar-Lev)
   Updated makefile.w32-vc to include lladdr.*, updated
   linkage libraries.
   Modified lladdr.c to be compiled under visual C.

 
 * Added two new management states:
    OPENVPN_STATE_RESOLVE      -- DNS lookup
    OPENVPN_STATE_TCP_CONNECT  -- Connecting to TCP server
 
 * Echo management state change to log.
 
 * Minor syshead.h change for NetBSD to allow
   TCP_NODELAY flag to work.
 
 * Modified --port-share code to remove the assumption that
   CMSG_SPACE always evaluates to a constant, to enable
   compilation on NetBSD and possibly other BSDs as well.
 
 * Eliminated gcc 3.3.3 warnings on NetBSD
   when ./configure --enable-strict is used.
 
 * Added optional minimum-number-of-bytes parameter
   to --inactive directive.
 

 2006.04.13 -- Version 2.1-beta14
 
 * Fixed Windows server bug in time backtrack handling code which
   could cause TLS negotiation failures on legitimate clients.

 * Rewrote gettimeofday function for Windows to be
   simpler and more efficient.

 * Merged PKCS#11 extensions to easy-rsa/2.0  (Alon Bar-Lev).

 
 * Added --route-metric option to set a default route metric
   for --route (Roy Marples).

 
 * Added --lladdr option to specify the link layer (MAC) address
   for the tap interface on non-Windows platforms (Roy Marples).
 

 2006.04.12 -- Version 2.1-beta13
 
 * Code added in 2.1-beta7 and 2.0.6-rc1 to extend byte counters
   to 64 bits caused a bug in the Windows version which has now
   been fixed.  The bug could cause intermittent crashes.
 	

 2006.04.05 -- Version 2.1-beta12
 
 * Security Vulnerability -- An OpenVPN client connecting to a
   malicious or compromised server could potentially receive
   "setenv" configuration directives from the server which could
   cause arbitrary code execution on the client via a LD_PRELOAD
   attack.  A successful attack appears to require that (a) the
   client has agreed to allow the server to push configuration
   directives to it by including "pull" or the macro "client" in
   its configuration file, (b) the client configuration file uses
   a scripting directive such as "up" or "down", (c) the client
   succesfully authenticates the server, (d) the server is
   malicious or has been compromised and is under the control of
   the attacker, and (e) the attacker has at least some level of
   pre-existing control over files on the client (this might be
   accomplished by having the server respond to a client web request

   with a specially crafted file).  Credit: Hendrik Weimer.
   CVE-2006-1629.

 
   The fix is to disallow "setenv" to be pushed to clients from
   the server, and to add a new directive "setenv-safe" which is
   pushable from the server, but which appends "OPENVPN_" to the
   name of each remotely set environmental variable.
 
 * "topology subnet" fix for FreeBSD (Benoit Bourdin).
 
 * PKCS11 fixes (Alon Bar-Lev).  For full description:
   svn log -r990 http://svn.openvpn.net/projects/openvpn/branches/BETA21
 	
 * When deleting routes under Linux, use the route metric
   as a differentiator to ensure that the route teardown
   process only deletes the identical route which was originally
   added via the "route" directive (Roy Marples).
 
 * Fix the t_cltsrv.sh file in FreeBSD 4 jails
   (Matthias Andree, Dirk Meyer, Vasil Dimov).
 
 * Extended tun device configure code to support ethernet
   bridging on NetBSD (Emmanuel Kasper).
 

 2006.02.19 -- Version 2.1-beta11
 
 * Fixed --port-share bug that caused premature closing
   of proxied sessions.
 

 2006.02.17 -- Version 2.1-beta10
 
 * Fixed --port-share breakage introduced in 2.1-beta9.
 

 2006.02.16 -- Version 2.1-beta9

 * Added --port-share option for allowing OpenVPN and HTTPS
   server to share the same port number.

 * Added --management-client option to connect as a client
   to management GUI app rather than be connected to as a
   server.

 * Added "bytecount" command to management interface.

 * --remote-cert-tls fixes (Alon Bar-Lev).

 2006.01.03 -- Version 2.1-beta8

 
 * --remap-usr1 will now also remap signals thrown during
   initialization.

 * Added --connect-timeout option to control the timeout
   on TCP client connection attempts (doesn't work on all
   OSes).  This patch also makes OpenVPN signalable during
   TCP connection attempts.

 * Fixed bug in acinclude.m4 where capability of compiler
   to handle zero-length arrays in structs is tested
   (David Stipp).
 * Fixed typo in manage.c where inline function declaration
   was declared without the "static" keyword (David Stipp).

 * Patch to support --topology subnet on Mac OS X (Mathias Sundman).

 * Added --auto-proxy directive to auto-detect HTTP or SOCKS
   proxy settings (currently Windows only).

 * Removed redundant base64 code.
 * Better sanity checking of --server and --server-bridge
   IP pool ranges, so as not to hit the assertion at
   pool.c:119 (2.0.5).
 * Fixed bug where --daemon and --management-query-passwords
   used together would cause OpenVPN to block prior to
   daemonization.
 * Fixed client/server race condition which could occur
   when --auth-retry interact is set and the initially
   provided auth-user-pass credentials are incorrect,
   forcing a username/password re-query.
 * Fixed bug where if --daemon and --management-hold are
   used together, --user or --group options would be ignored.

 * --ip-win32 adaptive is now the default.
 * --ip-win32 netsh (or --ip-win32 adaptive when in netsh
   mode) can now set DNS/WINS addresses on the TAP-Win32
   adapter.

 * Added new option --route-method adaptive (Win32)
   which tries IP helper API first, then falls back to
   route.exe.
 * Made --route-method adaptive the default.

 2005.11.12 -- Version 2.1-beta7

 * Allow blank passwords to be passed via the management
   interface.

 * Fixed bug where "make check" inside a FreeBSD "jail"
   would never complete (Matthias Andree).

 * Fixed bug where --server directive in --dev tap mode
   claimed that it would support subnets of /30 or less
   but actually would only accept /29 or less.

 * Extend byte counters to 64 bits (M. van Cuijk).

 * Fixed bug in Linux get_default_gateway function
   introduced in 2.0.4, which would cause redirect-gateway
   on Linux clients to fail.

 * Moved easy-rsa 2.0 scripts to easy-rsa/2.0 to
   be compatible with 2.0.x distribution.

 * Documented --route-nopull.

 * Documented --ip-win32 adaptive.

 * Windows build now linked with LZO2.

 * Allow ca, cert, key, and dh files to be specified
   inline via XML-like syntax without needing to
   reference an explicit file.
   For example:
   <ca>
 	data here...
   </ca>
 * Allow plugin and push directives to have multi-line
   parameter lists such as:
   <plugin>
     my-plugin.so
     parm1
     parm2
   </plugin>
 * Added connect-retry-max option (Alon Bar-Lev).
 * Fixed problems where signals thrown during initialization
   were not returning to a management-hold state.
 * Added a backtrack-hardened system time algorithm.
 * Added --remote-cert-ku, --remote-cert-eku, and
   --remote-cert-tls options for verifying certificate
   attributes (Alon Bar-Lev).
 * For Windows, reverted --ip-win32 default back to "dynamic".
   To use new adaptive mode, set explicitly.

 2005.11.01 -- Version 2.1-beta6

 * Security fix (merged from 2.0.4) -- Affects non-Windows

   OpenVPN clients of version 2.0 or higher which connect to
   a malicious or compromised server.  A format string
   vulnerability in the foreign_option function in options.c
   could potentially allow a malicious or compromised server

   to execute arbitrary code on the client.  Only
   non-Windows clients are affected.  The vulnerability
   only exists if (a) the client's TLS negotiation with
   the server succeeds, (b) the server is malicious or
   has been compromised such that it is configured to
   push a maliciously crafted options string to the client,
   and (c) the client indicates its willingness to accept
   pushed options from the server by having "pull" or

   "client" in its configuration file (Credit: Vade79).

   CVE-2005-3393
 * Security fix -- (merged from 2.0.4) Potential DoS
   vulnerability on the server in TCP mode.  If the TCP
   server accept() call returns an error status, the resulting
   exception handler may attempt to indirect through a NULL
   pointer, causing a segfault.  Affects all OpenVPN 2.0 versions.
   CVE-2005-3409

 * Fix attempt of assertion at multi.c:1586 (note that
   this precise line number will vary across different
   versions of OpenVPN).

 * Windows reliability changes:
   (a) Added code to make sure that the local PATH environmental
       variable points to the Windows system32 directory.
   (b) Added new --ip-win32 adaptive mode which tries 'dynamic'
       and then fails over to 'netsh' if the DHCP negotiation fails.
   (c) Made --ip-win32 adaptive the default.

 * More PKCS#11 additions/changes (Alon Bar-Lev).

 * Added ".PHONY: plugin" to Makefile.am to work around
   "make dist" issue.

 * Fixed double fork issue that occurs when --management-hold
   is used.
 * Moved TUN/TAP read/write log messages from --verb 8 to 6.
 * Warn when multiple clients having the same common name or
   username usurp each other when --duplicate-cn is not used.

 * Modified Windows and Linux versions of get_default_gateway
   to return the route with the smallest metric
   if multiple 0.0.0.0/0.0.0.0 entries are present.

 * Added ">NEED-OK" alert and "needok" command to management

   interface to provide a general interface for sending
   alerts to the end-user.  Used by the PKCS#11 code
   to send Token Insertion Requests to the user.

 * Added actual remote address used to the ">STATE" alert
   in the management interface (Rolf Fokkens).

 2005.10.17 -- Version 2.1-beta4

 
 * Fixed bug introduced in 2.1-beta3 where management
   socket bind would fail.

 * --capath fix in ssl.c (Zhuang Yuyao).

 * Added ".PHONY: plugin" to Makefile.am, reverted
   location of "plugin" directory (thanks to
   Matthias Andree for figuring this out).

 2005.10.16 -- Version 2.1-beta3

 * Added PKCS#11 support (Alon Bar-Lev).

 * Enable the use of --ca together with --pkcs12.  If --ca is
   used at the same time as --pkcs12, the CA certificate is loaded
   from the file specified by --ca regardless if the pkcs12 file
   contains a CA cert or not (Mathias Sundman).

 * Merged --capath patch (Thomas Noel).

 * Merged --multihome patch.

 * Added --bind option for TCP client connections (Ewan Bhamrah
   Harley).
 * Moved "plugin" directory to "plugins" to deal with strange
   automake problem that ended up being also fixable with
   ".PHONY: plugin" in Makefile.am.

 2005.10.13 -- Version 2.1-beta2
 
 * Made --sndbuf and --rcvbuf pushable.
 

 2005.10.01 -- Version 2.1-beta1

 
 * Made LZO setting pushable.
 * Renamed sample-keys/tmp-ca.crt to ca.crt.
 * Fixed bug where remove_iroutes_from_push_route_list
   was missing routes if those routes had
   an implied netmask (by omission) of 255.255.255.255. 

 * Merged with 2.0.3-rc1
 * easy-rsa/2.0 moved to easy-rsa
 * old easy-rsa moved to easy-rsa/1.0
 
 2005.09.23 -- Version 2.0.2-TO4
 
 * Added feature to TAP-Win32 adapter to allow it to be
   opened from non-administrator mode.  This feature
   is enabled by default, and can be enabled/disabled
   in the adapter advanced properties dialog.
 * Added --allow-nonadmin standalone option for Windows to
   set TAP adapter to allow non-admin access.  This
   is a user-mode version of the code, and duplicates
   the same feature as the above entry.
 * Added fix that attempts to solve corner case of tunnel not
   forwarding packets when system clock is reset to an earlier time.
 * Added --redirect-gateway bypass-dns option.  (Developers:
   To add bypass-dhcp or bypass-dns support to other OSes,
   add a get_bypass_addresses function to route.c for
   your OS.)
 * Added OPENVPN_PLUGIN_CLIENT_CONNECT_V2 plugin callback, which
   allows a client-connect plugin to return configuration text
   in memory, rather than via a file.
 * Fixed a bug where --mode server --proto tcp-server --cipher none
   operation could cause tunnel packet truncation.
 * openvpn --version will show [LZO1] or [LZO2], depending on
   version that was linked.
 
 2005.09.07 -- Version 2.0.2-TO1
 
 * Added --topology directive.  See man page.
 * Added --redirect-gateway bypass-dhcp option to add a route
   allowing DHCP packets to bypass the tunnel, when the
   DHCP server is non-local.  Currently only implemented
   on Windows clients.
 * Modified OpenVPN Service on Windows to declare the DHCP
   client service as a dependency.
 * Extended the plugin interface to allow plugins to declare
   per-client constructor and destructor functions, to make
   it simpler for plugins to maintain per-client state.

 
 2005.09.25 -- Version 2.0.3-rc1	

 
 * openvpn_plugin_abort_v1 function wasn't being properly
   registered on Windows.
 * Fixed a bug where --mode server --proto tcp-server --cipher none
   operation could cause tunnel packet truncation.
 
 2005.08.25 -- Version 2.0.2
 
 * No change from 2.0.2-rc1.
 
 2005.08.24 -- Version 2.0.2-rc1
 
 * Fixed regression bug in Win32 installer, introduced in 2.0.1,
   which incorrectly set OpenVPN service to autostart.
 * Don't package source code zip file in Windows installer
   in order to reduce the size of the installer.  The source
   zip file can always be downloaded separately if needed.
 * Fixed bug in route.c in FreeBSD, Darwin, OpenBSD and NetBSD
   version of get_default_gateway.  Allocated socket for route
   manipulation is never freed so number of mbufs continuously
   grow and exhaust system resources after a while (Jaroslav Klaus).
 * Fixed bug where "--proto tcp-server --mode p2p --management
   host port" would cause the management port to not respond until
   the OpenVPN peer connects.
 * Modified pkitool script to be /bin/sh compatible (Johnny Lam).
 
 2005.08.16 -- Version 2.0.1
 	
 * Security Fix -- DoS attack against server when run with "verb 0" and
   without "tls-auth".  If a client connection to the server fails
   certificate verification, the OpenSSL error queue is not properly
   flushed, which can result in another unrelated client instance on the
   server seeing the error and responding to it, resulting in disconnection
   of the unrelated client (CAN-2005-2531).
 * Security Fix -- DoS attack against server by authenticated client.
   This bug presents a potential DoS attack vector against the server
   which can only be initiated by a connected and authenticated client.
   If the client sends a packet which fails to decrypt on the server,
   the OpenSSL error queue is not properly flushed, which can result in
   another unrelated client instance on the server seeing the error and
   responding to it, resulting in disconnection of the unrelated client

   (CAN-2005-2532).  Credit: Mike Ireton.

 * Security Fix -- DoS attack against server by authenticated client.
   A malicious client in "dev tap" ethernet bridging mode could
   theoretically flood the server with packets appearing to come from
   hundreds of thousands of different MAC addresses, causing the OpenVPN
   process to deplete system virtual memory as it expands its internal
   routing table.  A --max-routes-per-client directive has been added
   (default=256) to limit the maximum number of routes in OpenVPN's
   internal routing table which can be associated with a given client
   (CAN-2005-2533).
 * Security Fix -- DoS attack against server by authenticated client.
   If two or more client machines try to connect to the server at the
   same time via TCP, using the same client certificate, and when
   --duplicate-cn is not enabled on the server, a race condition can
   crash the server with "Assertion failed at mtcp.c:411"
   (CAN-2005-2534).
 * Fixed server bug where under certain circumstances, the client instance
   object deletion function would try to delete iroutes which had never been
   added in the first place, triggering "Assertion failed at mroute.c:349".
 * Added --auth-retry option to prevent auth errors from being fatal
   on the client side, and to permit username/password requeries in case
   of error.  Also controllable via new "auth-retry" management interface
   command.  See man page for more info.
 * Added easy-rsa 2.0 scripts to the tarball in easy-rsa/2.0
 * Fixed bug in openvpn.spec where rpmbuild --define 'without_pam 1'
   would fail to build.
 * Implement "make check" to perform loopback tests (Matthias Andree).
 
 2005.07.21 -- Version 2.0.1-rc7
 
 * Support LZO 2.01 which renamed its library to lzo2 (Matthias Andree).
 * Include linux/types.h before checking for linux/errqueue.h (Matthias
   Andree).
 
 2005.07.15 -- Version 2.0.1-rc6
 
 * Commented out "user nobody" and "group nobody" in sample
   client/server config files.
 * Allow '@' character to be used in --client-config-dir
   file names.
 
 2005.07.04 -- Version 2.0.1-rc5
 
 * Windows version will log a for-further-info URL when
   initialization sequence is completed with errors.
 * Added DLOPEN_PAM parameter to plugin/auth-pam/Makefile
   to control whether auth-pam plugin links to PAM via
   dlopen or -lpam.  By default, DLOPEN_PAM=1 so pre-existing
   behavior should be preserved.  DLOPEN_PAM=0 is the preferred
   setting to link via -lpam, but DLOPEN_PAM=1 works around
   a bug in SuSE 9.1 (and possibly other distros as well)
   where the PAM modules are not linked with -lpam.  See
   thread on openvpn-devel for more discussion about this
   patch (Simon Perreault).
 
 2005.06.15 -- Version 2.0.1-rc4
 
 * Support LZO 2.00, including changes to configure script to
   autodetect LZO version.
 
 2005.06.12 -- Version 2.0.1-rc3
 
 * Fixed a bug which caused standard file handles to not be closed
   after daemonization when --plugin and --daemon are used together,
   and if the plugin initialization function forks (as does auth-pam
   and down-root) (Simon Perreault).
 * Added client-side up/down scripts in contrib/pull-resolv-conf
   for accepting server-pushed "dhcp-option DOMAIN" and "dhcp-option DNS"
   on Linux/Unix systems (Jesse Adelman).
 * Fixed bug where if client-connect scripts/plugins were cascaded,
   and one (but not all) of them returned an error status, there might
   be cases where for an individual script/plugin, client-connect was
   called but not client-disconnect.  The goal of this fix is to
   ensure that if client-connect is called on a given client instance,
   then client-disconnect will definitely be called.  A potential
   complication of this fix is that when client-connect functions are
   cascaded, it's possible that the client-disconnect function would
   be called in cases where the related client-connect function returned
   an error status.  This fix should not alter OpenVPN behavior when
   scripts/plugins are not cascaded.
 * Changed the hard-to-reproduce "Assertion failed at fragment.c:312"
   fatal error to a warning: "FRAG: outgoing buffer is not empty".
   Need more info on how to reproduce this one.
 * When --duplicate-cn is used, the --ifconfig-pool allocation
   algorithm will now allocate the first available IP address.
 * When --daemon and --management-hold are used together,
   OpenVPN will daemonize before it enters the management hold state.
 
 2005.05.16 -- Version 2.0.1-rc2
 
 * Modified vendor test in openvpn.spec file to match against
   "Mandrakesoft" in addition to "MandrakeSoft".
 * Using --iroute in a --client-config-dir file while in --dev tap
   mode is not currently supported and will produce a warning
   message. Fixed bug where in certain cases, in addition to
   generating a warning message, this combination of options
   would also produce a fatal assertion in mroute.c.
 * Pass --auth-user-pass username to server-side plugin without
   performing any string remapping (plugins, unlike scripts,
   don't get any security benefit from string remapping).
   This is intended to fix an issue with openvpn-auth-pam/pam_winbind
   where backslash characters in a username ('\') were being remapped
   to underscore ('_').
 * Updated OpenSSL DLLs in Windows build to 0.9.7g.
 * Documented --explicit-exit-notify in man page.
 * --explicit-exit-notify seconds parameter defaults to 1 if
   unspecified.
 
 2005.04.30 -- Version 2.0.1-rc1
 
 * Fixed bug where certain kinds of fatal errors after
   initialization (such as port in use) would leave plugin
   processes (such as openvpn-auth-pam) still running.
 * Added optional openvpn_plugin_abort_v1 plugin function for
   closing initialized plugin objects in the event of a fatal
   error by main OpenVPN process.
 * When the --remote list is > 1, and --resolv-retry is not
   specified (meaning that it defaults to "infinite"), apply the
   infinite timeout to the --remote list as a whole, but try each
   list item only once before moving on to the next item.
 * Added new --syslog directive which redirects output
   to syslog without requiring the use of the --daemon or --inetd
   directives.
 * Added openvpn.spec option to allow RPM to be built with support
   for passwords read from a file:
   rpmbuild -tb [openvpn.x.tar.gz] --define 'with_password_save 1'
 
 2005.04.17 -- Version 2.0
 
 * Fixed minor options string typo in options.c.
 
 2005.04.10 -- Version 2.0-rc21
 
 * Change license description from "GPL Version 2 or (at your
   option) any later version" to just "GPL Version 2".
 
 2005.04.04 -- Version 2.0-rc20
 
 * Dag Wieers has put together an OpenVPN/LZO binary RPM set with
   excellent distro/version coverage for RH/EL/Fedora, though
   using his own SPEC.  I modified openvpn.spec to follow some of
   the same conventions such as putting sample scripts and doc
   files in %doc rather than /usr/share/openvpn.
 * Minor change to init scripts to run the user-defined script
   /etc/openvpn/openvpn-startup (if it exists) before any OpenVPN
   configs are started, and to run /etc/openvpn/openvpn-shutdown
   after all OpenVPN configs have been stopped.  The
   openvpn-startup script can be used for stuff like
   insmod tun.o, setting up firewall rules, or starting
   ethernet bridges.
 
 2005.03.29 -- Version 2.0-rc19
 
 * Omit additions of routes where the network and
   gateway are equal and the netmask is 255.255.255.255.
   This can come up if you are using both
   server/ifconfig-pool and client-config-dir with
   ifconfig-push static addresses for some subset of clients
   which directly reference the server IP address as the
   remote endpoint.
 	
 2005.03.28 -- Version 2.0-rc18
 
 * Packaged Windows installer with OpenSSL 0.9.7f.
 * Built Windows installer with NSIS 2.06.
 
 2005.03.12 -- Version 2.0-rc17
 
 * "MANAGEMENT: CMD" log file output will now only occur
   at --verb 7 or greater.
 * Added an optional name/value configuration list to
   the openvpn-auth-pam plugin module argument list.  See
   plugin/auth-pam/README for documentation. This is necessary
   in order for openvpn-auth-pam to work with queries generated
   by arbitrary PAM modules.
 * In both auth-pam and down-root plugins, in the forked process,
   a read error on the parent process socket is no longer fatal.
 * MandrakeSoft liblzo1 RPM only Provides for a 'liblzo1'.
   A conditional test of the vendor has been added to
   Require the appropriately named 'lzo' (liblzo1 / lzo).
   (Tom Walsh - http://openhardware.net)
 
 	
 2005.02.20 -- Version 2.0-rc16
 
 * Fixed bug introduced in rc13 where Windows service wrapper
   would be installed with a startup type of Automatic.
   This fix restores the previous behavior of installing
   with a startup type of Manual.
 
 2005.02.19 -- Version 2.0-rc15
 
 * Added warning when --keepalive is not used in a server
   configuration.
 * Don't include OpenSSL md4.h file if we are not building
   NTLM proxy support (Waldemar Brodkorb).
 * Added easy-rsa/build-key-pkcs12 and
   easy-rsa/Windows/build-key-pkcs12.bat scripts
   (Mathias Sundman).
 
 2005.02.16 -- Version 2.0-rc14
 
 * Fixed small memory leak that occurs when --crl-verify
   is used.
 * Upgraded Windows installer and .nsi script to NSIS 2.05
   (Mathias Sundman).
 * Changed #include backslash usage in cryptoapi.c to use
   forward slashes instead (Gisle Vanem).
 * Created easy-rsa/revoke-full to handle revocations in
   a single step: (a) revoke crt, (b) regenerate CRL, and
   (c) verify that revocation succeeded.
 * Renamed easy-rsa/Windows/revoke-key to revoke-full so
   that both *nix and Windows scripts are equivalent.
 	
 2005.02.11 -- Version 2.0-rc13
 
 * Improve human-readability of local/remote options
   diff, when inconsistencies are present.
 * For Windows easy-rsa, distribute vars.bat.sample and
   openssl.cnf.sample, then copy them to their normal
   filenames (without the .sample) when init-config.bat
   is run.  This is to prevent OpenVPN upgrades from
   wiping out vars.bat and openssl.cnf edits.
 * Modified service wrapper (Windows) to use a
   case-insensitive search when scanning for .ovpn files
   in \Program Files\OpenVPN\config.  Prior versions
   required an all-lower-case .ovpn file extension.
 * Miscellaneous service wrapper code cleanup.
 * If --user/--group is used on Windows, treat it
   as a no-op with a warning (this makes it easier to
   distribute the same client config file to Windows
   and *nix users).
 * Warn if --ifconfig-pool-persist is used with
   --duplicate-cn.
 
 2005.02.05 -- Version 2.0-rc12
 
 * Removed some debugging code inadvertently included
   in rc11 which would print the --auth-user-pass
   username/password provided by clients in the server
   logfile.
 * Client code for cycling through --remote list will
   retry the last address which successfully authenticated
   before moving on through the list.
 * Windows installer will now install sample configuration
   files in \Program Files\OpenVPN\sample-configs as well
   as generate a start menu shortcut to this directory.
 * Minor type change in buffer.[ch] to work around char-type
   ambiguity bug.  Caused management interface lock-ups on
   ARM when building with armv4b-hardhat-linux-gcc 2.95.3.
 
 2005.02.03 -- Version 2.0-rc11
 
 * Windows installer will now install easy-rsa directory
   in \Program Files\OpenVPN
 * Allow syslog facility to be controlled at compile time,
   e.g. -DLOG_OPENVPN=LOG_LOCAL6 (P Kern).
 * Changed certain shell scripts in distribution to use
   #!/bin/sh rather than #!/bin/bash for better portability.
 * If --ifconfig-pool-persist seconds parameter is 0, treat
   persist file as an allocation of fixed IP addresses
   (previous versions took IP-to-common-name associations
   from this list as hints, not mandatory static allocations).
 * Fixed bug on *nix where if --auth-user-pass and --log
   were used together, the username prompt would be sent to
   the log file rather than /dev/tty.
 * Spurious text in openvpn.8 detected by doclifter
   (Eric S. Raymond).
 * Call closelog later on daemon kill so that process
   exit message is written to syslog.
 
 2005.01.27 -- Version 2.0-rc10
 
 * When ./configure is run with plugins enabled (the default),
   check whether or not dlopen exists in libc before testing
   for libdl.  This is to fix an issue on FreeBSD and possibly
   other OSes which bundle libdl functions in libc.
 * On Windows, filter initial WSAEINVAL warning which occurs
   on the initial read attempt of an unbound socket.
 * The easy-rsa scripts build-key, build-key-pass, and
   build-key-server will now chmod the .key file
   to 0600.  This is in addition to the fact the generated
   keys directory has always been similarly protected
   (Pete Harlan).
 
 2005.01.23 -- Version 2.0-rc9
 
 * Fixed error "ROUTE: route addition failed using
   CreateIpForwardEntry ..." on Windows when --redirect-gateway
   is used over a RRAS internet link.
 * When using --route-method exe on Windows, include the
   gateway parameter on route delete commands (Mathias Sundman).
 * Try not to do a hard reset (i.e. SIGHUP) when two
   SIGUSR1 signals are received in close succession.
 * If the push list tries to grow beyond its buffer capacity,
   the resulting error will be non-fatal.
 * To increase the push list capacity (must be done on both
   client and server), increase TLS_CHANNEL_BUF_SIZE in
   common.h (default=1024).
 	
 2005.01.15 -- Version 2.0-rc8
 
 * Fixed bug introduced in rc7 where options error
   "--auth-user-pass requires --pull" might occur even
   if --pull was correctly specified.
 * Changed management interface code to bind once
   to TCP socket, rather than rebinding after every
   client disconnect.
 * Added "disable" directive for client-config-dir
   files.
 * Windows binary install is now distributed with
   OpenSSL 0.9.7e.
 * Query the management interface for --http-proxy
   username/password if authfile is set to "stdin".
 * Added current OpenVPN version number to "Unrecognized
   option or missing parameter" error message.
 * Added "-extensions server" to "openssl req" command
   in easy-rsa/build-key-server (Nir Yeffet).
 	
 2005.01.10 -- Version 2.0-rc7
 
 * Fixed bug in management interface which could cause
   100% CPU utilization in --proto tcp-server mode
   on all *nix OSes except for Linux 2.6.
 * --ifconfig-push now accepts DNS names as well as
   IP addresses.
 * Added sanity check errors when --pull or
   --auth-user-pass is used in an incorrect mode.
 * Updated man page entries for --client-connect and
   --ifconfig-push.
 * Added "String Types and Remapping" section to man
   page to consisely document the way which OpenVPN
   may convert certain types of characters in strings
   to ('_').
 * Modified bridging description in HOWTO to emphasize
   the fact that bridging allows Windows file and print
   sharing without a WINS server (Charles Duffy).
 
 2004.12.20 -- Version 2.0-rc6
 
 * Improved checking for epoll support in ./configure
   to fix false positive on RH9 (Jan Just Keijser).
 * Made the "MULTI TCP: I/O wait required blocking in
   multi_tcp_action, action=7" error nonfatal and replaced
   with "MULTI: Outgoing TUN queue full, dropped packet".
   So far the issue only seems to occur on Linux 2.2
   in --mode server --proto tcp mode.  It occurs when
   the TUN/TAP driver locks up and refuses to accept
   new packet writes for a second or more.
 * Fixed bug where if a --client-config-dir file tried
   to include another file using "config", and if that
   include failed, OpenVPN would abort with a fatal
   error.  Now such inclusion failures will be logged
   but are no longer fatal.
 * Global changes to the way that packet buffer alignment
   is handled.  Previously we didn't care about alignment
   and took care, when handling 16 and 32 bit words
   in buffers, to always use alignment-safe transfers.
   This approach appears to be inadequate on some
   architectures such as alpha.  The new approach is
   to initialize packet buffers in a way that anticipates
   how component structures will be allocated within
   them, to maintain correct alignment.
 * Added --dhcp-option DISABLE-NBT to disable NetBIOS
   over TCP (Jan Just Keijser).
 * Added --http-proxy-option directive for controlling
   miscellaneous HTTP proxy options.
 * Management state will no longer transition to "WAIT"
   during TLS renegotiations.
 
 2004.12.16 -- Version 2.0-rc5
 
 * The --client-config-dir option will now try to open
   a default file called "DEFAULT" if no file matching
   the common name of the incoming client was found.
 * The --client-connect script/plugin can now veto client
   authentication by returning a failure code.
 * The --learn-address script/plugin can now prevent a
   client-instance/address association from being learned
   by returning a failure code.
 * Changed RPM group in .spec file to Applications/Internet.
 
 2004.12.14 -- Version 2.0-rc4
 
 * SuSE only -- Fixed interaction between openvpn.spec and
   suse/openvpn.init where the .spec file was writing the
   OpenVPN binary to a different location than where the
   .init script was referencing it (Stefan Engel).
 * Solaris only -- Split Solaris ifconfig command into two
   parts (Jan Just Keijser).
 * Some cleanup in add_option().
 * Better error checking on input dotted quad IP addresses.
 * Verify that --push argument is quoted, if there is
   more than one.
 * More miscellaneous option sanity checks.
 
 2004.12.13 -- Version 2.0-rc3
 
 * On Windows, when --log or --log-append is used,
   save the original stderr for username and password
   prompts.
 * Fixed a bug introduced in the late 2.0 betas where
   if a "verb" parameter >= 16 was used, it would be
   ignored and the actual verb level would remain at 1.
 * Fixed a bug mostly seen on OS X where --management-hold
   or --management-query-passwords would cause the management
   interface to be unresponsive to incoming client connections.
 * Trigger an options error if one of the management-modifying
   options is used without "management" itself.
 
 2004.12.12 -- Version 2.0-rc2
 
 * Amplified warnings in documentation about possible
   man-in-the-middle attack when clients do not properly
   verify server certificate.  Changes to easy-rsa README,
   FAQ, HOWTO, man page, and sample client config file.
 * Added a warning message if --tls-client or --client
   is used without also specifying one of either
   --ns-cert-type, --tls-remote, or --tls-verify.
 * status_open() fixes for MSVC builds (Blaine Fleming).
 * Fix attempt of "ntlm.c:55: error: `des_cblock' undeclared"
   compiler error which has been reported on some platforms.
 * The openvpn.spec file for rpmbuild has several
   new build-time options.  See comments in the file.
 * Plugins are now built and packaged in the RPM and
   will be saved in /usr/share/openvpn/plugin/lib.
 * Added --management-hold directive to start OpenVPN
   in a hibernating state until released by the
   management interface.  Also added "hold" command
   to the management interface.
  	
 2004.12.07 -- Version 2.0-rc1
 
 * openvpn.spec workaround for SuSE confusion regarding
   /etc/init.d vs. /etc/rc.d/init.d (Stefan Engel).
 
 2004.12.05 -- Version 2.0-beta20
 
 * The ability to read --askpass and --auth-user-pass
   passwords from a file has been disabled by default.
   To re-enable, use ./configure --enable-password-save.
 * Added additional pre-connected states to management
   interface.  See management/management-notes.txt
   for more info.
 * State history is now recorded by the management
   interface, and the "state" command now works like
   the log or echo commands.
 * State history and real-time state change notifications
   are now prepended with an integer unix timestamp.
 * Added --http-proxy-timeout option, previously
   the timeout was hardcoded to 5 seconds.
 	
 2004.12.02 -- Version 2.0-beta19
 
 * Fixed bug in management interface line termination
   where output lines incorrectly contained a \00 char
   after the customary \0d \0a.
 * Fixed bug introduced in beta18 where Windows version
   would segfault on options errors.
 * Fixed bug in management interface where an empty
   quoted string ("") entered as a parameter would cause
   a segfault.
 * Fixed bug where --resolv-retry was not working
   properly with multiple --remote hosts.
 * Added additional ./configure options to reduce
   executable size for embedded applications.
   See ./configure --help.
 
 2004.11.28 -- Version 2.0-beta18
 
 * Added management interface.  See new --management-*
   options or the full management interface documentation
   in management/management-notes.txt in the tarball.
   Management interface inclusion can be disabled by
   ./configure --disable-management.
 * Added two new plugin modules: auth-pam and down-root.
   Auth-pam supports pam-based authentication using a
   split privilege execution model, while down-root enables
   a down script to be executed with root privileges, even
   when --user/--group is used to drop root privileges.
   See the plugin directory in the tarball for READMEs,
   source code, and Makefiles.
 * Plugin developers should note that some changes were
   made to the plugin interface since beta17.  See
   openvpn-plugin.h for details.
   Plugin interface inclusion can be disabled with
   ./configure --disable-plugins
 * Added easy-rsa/build-key-server script which will
   build a certificate with with nsCertType=server.
 * Added --ns-cert-type option for verification
   of nsCertType field in peer certificate.
 * If --fragment n is specified and --mssfix is specified
   without a parameter, default --mssfix to n.  This restores
   the 1.6 behavior when using --mssfix without a parameter.
 * Fixed SSL context initialization bug introduced in beta14
   where this error might occur on restarts: "Cannot load
   certificate chain ... PEM_read_bio:no start line".
 
 2004.11.11 -- Version 2.0-beta17
 
 * Changed default port number to 1194 per IANA official
   port number assignment.
 * Added --plugin directive which allows compiled
   modules to intercept script callbacks.  See
   plugin folder in tarball for more info.
 * Fixed bug introduced in beta12 where --key-method 1
   authentications which should have succeeded would fail.
 * Ignore SIGUSR1 during DNS resolution.
 * Added SuSE support to openvpn.spec (Umberto Nicoletti).
 * Fixed --cryptoapicert SUBJ: parsing bug (Peter 'Luna'
   Runestig).
 
 2004.11.07 -- Version 2.0-beta16
 
 * Modified sample-scripts/auth-pam.pl to get username
   and password from OpenVPN via a file rather than
   via environmental variables.
 * Added bytes_sent and bytes_received environmental
   variables to be set prior to client-disconnect script.
 * Changed client virtual IP derivation precedence:
   (1) use --ifconfig-push directive from --client-connect
   script, (2) use --ifconfig-push directive from
   --client-config-dir, and (3) use --ifconfig-pool
   address.
 * If a --client-config-dir file specifies --ifconfig-push,
   it will be visible to the --client-connect-script in
   the ifconfig_pool_remote_ip environmental variable.
 * For tun-style tunnels, the ifconfig_pool_local_ip
   environmental variable will be set, while for
   tap-style tunnels, the ifconfig_pool_netmask variable
   will be set.
 * Added intelligence to autoconf script to test
   compiler for the accepted form of zero-length arrays.
 * Fixed a bug introduced in beta12 where --ip-win32
   netsh would fail if --dev-node was not explicitly
   specified.
 * --ip-win32 netsh will now work on hidden adapters.
 * Fix attempt of "Assertion failed at crypto.c:149".
   This assertion has also been reported on 1.x with a
   slightly different line number.  The fix is twofold:
   (1) In previous releases, --mtu-test may trigger this
   assertion -- this bug has been fixed.  (2) If something
   else causes the assertion to be thrown, don't panic,
   just output a nonfatal warning to the log and drop
   the packet which generated the error.
 * Support TAP interfaces on Mac OS X (Waldemar Brodkorb).
 * Added --echo directive.
 * Added --auth-nocache directive.
 
 2004.10.28 -- Version 2.0-beta15
 
 * Changed environmental variable character classes
   so that names must consist of alphanumeric or
   underbar chars and values must consist of printable
   characters.  Illegal chars will be deleted.
   Versions prior to 2.0-beta12 were more restrictive
   and would map spaces to '.'.
 * On Windows, when the TAP adapter fails to
   initialize with the correct IP address, output
   "Initialization Sequence Completed with Errors"
   to the console or log file.
 * Added a warning when user/group/chroot is used
   without persist-tun and persist-key.
 * Added cryptoapi.[ch] to tarball and source zip.
 * --tls-remote option now works with common name
   prefixes as well as with the full X509 subject
   string.  This is a useful alternative to using
   a CRL on the client.
 * common names associated with a static
   --ifconfig-push setting will no longer leave
   any state in the --ifconfig-pool-persist file.
 * Hard TLS errors (TLS handshake failed) will now
   trigger either a SIGUSR1 signal by default
   or SIGTERM (if --tls-exit is specified).  In TCP
   mode, all TLS errors are considered to be hard.
   In server mode, the signal will be local to the
   client instance.
 * Added method parameter to --auth-user-pass-verify
   directive to select whether username/password
   is passed to script via environment or a temporary
   file.
 * Added --status-version option to control format
   of --status file.  The --mode server
   --status-version 2 format now includes a line
   type token, the virtual IP address is shown
   in the client list (even in --dev tap mode),
   and the integer time_t value is shown anywhere
   an ascii-formatted time/date is also shown.
 * Added --remap-usr1 directive which can be used
   to control whether internally or externally
   generated SIGUSR1 signals are remapped to
   SIGHUP (restart without persisting state) or
   SIGTERM (exit).
 * When running as a Windows service (using
   --service option), check the exit event before
   and after reading one line of input from
   stdin, when reading username/password info.
 * For developers: Extended the --gremlin function
   to better stress-test the new 2.0 features,
   added Valgrind support on Linux and Dmalloc
   support on Windows.
 
 2004.10.19 -- Version 2.0-beta14
 
 * Fixed a bug introduced in Beta12 that would occur
   if you use a --client-connect script without also
   defining --tmp-dir.
 * Fixed a bug introduced in Beta12 where a learn-address
   script might segfault on the delete method.
 * Added Crypto API support in Windows version via
   the --cryptoapicert option (Peter 'Luna' Runestig).
 
 2004.10.18 -- Version 2.0-beta13
 
 * Fixed an issue introduced in Beta12 where the private
   key password would not be prompted for unless --askpass
   was explicitly specified in the config.
 
 2004.10.17 -- Version 2.0-beta12
 
 * Added support for username/password-based authentication.
   Clients can now authentication themselves with the server
   using either a certificate, a username/password, or both.
   New directives: --auth-user-pass, --auth-user-pass-verify,
   --client-cert-not-required, and --username-as-common-name.
 * Added NTLM proxy patch (William Preston).
 * Added --ifconfig-pool-linear server flag to allocate
   individual tun addresses for clients rather than /30
   subnets (won't work with Windows clients).
 * Modified --http-proxy code to cache username/password
   across restarts.
 * Modified --http-proxy code to read username/password
   from the console when the auth file is given as "stdin".
 * Modified --askpass to take an optional filename argument.
 * --persist-tun and --persist-key now work in client mode
   and can be pushed to clients as well.
 * Added --ifconfig-pool-persist directive, to maintain
   ifconfig-pool info in a file which is persistent across
   daemon instantiations.
 * --user and --group privilege downgrades as well as
   --chroot now also work in client mode (the
   dowgrade/chroot will be delayed until the initialization
   sequence is completed).
 * Added --show-engines standalone directive to show
   available OpenSSL crypto accelerator engine support.
 * --engine directive now accepts an optional engine-ID
   parameter to control which engine is used.
 * "Connection reset, restarting" log message now shows
   which client is being reset.
 * Added --dhcp-pre-release directive in Windows version.
 * Second parm to --ip-win32 can be "default", e.g.
   --ip-win32 dynamic default 60.
 * Fixed documentation bug regarding environmental
   variable settings for --ifconfig-pool IP addresses.
   The correct environmental variable names are:
   ifconfig_pool_local_ip and ifconfig_pool_remote_ip.
 * ifconfig_pool_local_ip and ifconfig_pool_remote_ip
   environmental variables are now passed to the
   client-disconnect script.
 * In server mode, environmental variables are now scoped
   according to the client they are associated with,
   to solve the problem of "crosstalk" between different
   client's environmental variable sets.
 * Added --down-pre flag to cause --down script to be
   called before TUN/TAP close (rather than after).
 * Added --tls-exit flag which will cause OpenVPN
   to exit on any TLS errors.
 * Don't push a route to a client if it exactly
   matches an iroute (this lets you push routes to
   all clients, and OpenVPN will automatically remove
   the route from the route push list only for that client
   which the route actually belongs to).
 * Made '--resolv-retry infinite' the default.
   --resolv-retry can be disabled by using a parameter of 0.
 * For clients which plan to pull config info from server,
   set an initial default ping-restart of 60 seconds.
 * Optimized mute code to lessen the load on the processor
   when messages are being muted at a higher frequency.
 * Made route log messages non-mutable.
 * Silence the Linux "No buffer space available" message.
 * Added miscellaneous additional option sanity checks.
 * Added Windows version of easy-rsa scripts in
   easy-rsa/Windows directory (Andrew J. Richardson).
 * Added NetBSD route patch (Ed Ravin).
 * Added OpenBSD patch for TAP + --redirect-gateway
   (Waldemar Brodkorb).
 * Directives which prompt for a username and/or password
   will now work with --daemon (OpenVPN will prompt
   before forking).
 * Warn if CRL is from a different issuer than the
   issuer of the peer certificate (Bernhard Weisshuhn).
 * Changed init script chkconfig parameters to start
   OpenVPN daemon(s) before NFS.
 * Bug fix attempt of "too many I/O wait events" which occurs
   on OSes which prefer select() over poll() such as Mac OS X.
 * Added --ccd-exclusive flag.  This flag will require, as a
   condition of authentication, that a connecting client has
   a --client-config-dir file.
 * TAP-Win32 open code will attempt to open a free adapter
   if --dev-node is not specified (Mathias Sundman).
 * Resequenced --nice and --chroot ordering so that --nice
   occurs first.
 * Added --suppress-timestamps flag (Charles Duffy).
 * Source code changes to allow compilation by MSVC
   (Peter 'Luna' Runestig).
 * Added experimental --fast-io flag which optimizes
   TUN/TAP/UDP writes on non-Windows systems.
 	
 2004.08.18 -- Version 2.0-beta11
 
 * Added --server, --server-bridge, --client, and
   --keepalive helper directives.  See client.conf
   and server.conf in sample-config-files for sample
   configurations which use the new directives.
 * On Windows, added --route-method to control
   whether IP Helper API or route.exe is used
   to add/delete routes.
 * On Windows, added a second parameter to
   --route-delay to control the maximum time period
   to wait for the TAP-Win32 adapter to come up
   before adding routes.
 * Fixed bug in Windows version where configurations
   which omit --ifconfig might fail to recognize when
   the TAP adapter is up.
 * Proxy connection failures will now retry according
   to the --connect-retry parameter. 
 * Fixed --dev null handling on Windows so that TLS
   loopback test described in INSTALL file works
   correctly on Windows.
 * Added "Initialization Sequence Completed" message
   after all initialization steps have been completed
   and the VPN can be considered "up".
 * Better sanity-checking on --ifconfig-pool parameters.
 * Added --tcp-queue-limit option to control
   TUN/TAP -> TCP socket overflow.
 * --ifconfig-nowarn flag will now silence general
   warnings about possible --ifconfig address
   conflicts, including the warning about --ifconfig
   and --remote addresses being in same /24 subnet.
 * Fixed case where server mode did not correctly
   identify certain types of ethernet multicast packets
   (Marcel de Kogel).
 * Added --explicit-exit-notify option (experimental).
 
 2004.08.02 -- Version 2.0-beta10
 
 * Fixed possible reference after free of option strings
   after a restart, bug was introduced in beta8.
 * Fixed segfault at route.c:919 in the beta9
   Windows version that was being caused by indirection
   through a NULL pointer.
 * Mistakenly built debug version of TAP-Win32 driver
   for beta9.  Beta10 has correct release build.
 
 2004.07.30 -- Version 2.0-beta9
 
 * Fixed --route issue on Windows that was introduced with
   the new beta8 route implementation based on the
   IP Helper API.
 
 2004.07.27 -- Version 2.0-beta8
 
 * Added TCP support in server mode.
 * Added PKCS #12 support (Mathias Sundman).
 * Added patch to make revoke-crt and make-crl work
   seamlessly within the easy-rsa environment (Jan Kiszka).
 * Modified --mode server ethernet bridge code to forward
   special IEEE 802.1d MAC Groups, i.e. 01:80:C2:XX:XX:XX.
 * Added --dhcp-renew and --dhcp-release flags to Windows
   version.  Normally DHCP renewal and release on the TAP
   adapter occurs automatically under Windows, however
   if you set the TAP-Win32 adapter Media Status property
   to "Always Connected", you may need these flags.
 * Added --show-net standalone flag to Windows version to
   show OpenVPN's view of the system adapter and routing
   tables.
 * Added --show-net-up flag to Windows version to output
   the system routing table and network adapter list to
   the log file after the TAP-Win32 adapter has been brought
   up and any routes have been added.
 * Modified Windows version to add routes using the IP Helper
   API rather than by calling route.exe.
 * Fixed bug where --route-up script was not being called
   if no --route options were specified.
 * Added --mute-replay-warnings to suppress packet replay
   warnings.  This is a common false alarm on WiFi nets.
 * Added "def1" flag to --redirect-gateway option to override
   the default gateway by using 0.0.0.0/1 and 128.0.0.0/1
   rather than 0.0.0.0/0.  This has the benefit of overriding
   but not wiping out the original default gateway.
   (Thanks to Jim Carter for pointing out this idea).
 * You can now run OpenVPN with a single config file argument.
   For example, you can now say "openvpn config.conf"
   rather than "openvpn --config config.conf".
 * On Windows, made --route and --route-delay more adaptive
   with respect to waiting for interfaces referenced by the
   route destination to come up.  Routes added by --route
   should now be added as soon as the interface comes up,
   rather than after an obligatory 10 second delay.  The
   way this works internally is that --route-delay now
   defaults to 0 on Windows.  Previous versions would
   wait for --route-delay seconds then add the routes.
   This version will wait --route-delay seconds and then
   test the routing table at one second intervals for the
   next 30 seconds and will not add the routes until they
   can be added without errors.
 * On Windows, don't setsockopt SO_SNDBUF or SO_RCVBUF by
   default on TCP/UDP socket in light of reports that this
   action can have undesirable global side effects on the
   MTU settings of other adapters.  These parameters can
   still be set, but you need to explicitly specify
   --sndbuf and/or --rcvbuf.
 * Added --max-clients option to limit the maximum number
   of simultaneously connected clients in server mode.
 * Added error message to illuminate shell escape gotcha when
   single backslashes are used in Windows path names.
 * Added optional netmask parm to --ifconfig-pool.
 * Fixed bug where http-proxy connect retry attempts were
   incorrectly going to the remote OpenVPN server,
   not to the HTTP proxy server.
 
 2004.06.29 -- Version 2.0-beta7
 
 * Fixed bug in link_socket_verify_incoming_addr() which
   under certain circumstances could have caused --float
   behavior even if --float was not specified.
 * --tls-auth option now works with --mode server.
   All clients and the server should use the same
   --tls-auth key when operating in client/server mode.
 * Added --engine option to make use of OpenSSL-supported
   crypto acceleration hardware.
 * Fixed some high verbosity print format size issues
   in event.c for 64 bit platforms (Janne Johansson).
 * Made failure to open --log or --log-append file
   a non-fatal error.
 
 2004.06.23 -- Version 2.0-beta6
 
 * Fixed Windows installer to intelligently put
   up a reboot dialog only if tapinstall tells
   us that it's really necessary.
 * Fixed "Assertion failed at fragment.c:309"
   bug when --mode server and --fragment are used
   together.
 * Ignore HUP, USR1, and USR2 signals during
   initialization.  Prior versions would abort.
 * Fixed bug on OS X: "Assertion failed at event.c:406".
 * Added --service option to Windows version, for use
   when OpenVPN is being programmatically instantiated
   by another process (see man page for info).
 * --log and --log-append options now work on Windows.
 * Update OpenBSD INSTALL notes (Janne Johansson).
 * Enable multicast on tun interface when running on
   OpenBSD (Pavlin Radoslavov).
 * Fixed recent --test-crypto breakage, where options
   such as --cipher were not being parsed correctly.
 * Modified options compatibility string by removing
   ifconfig substring if it is empty.  Incremented
   options compatibility string version number to 4.
 * Fixed typo in --tls-timeout option parsing
   (Mikael Lonnroth).
 
 2004.06.13 -- Version 2.0-beta5
 
 * Fixed rare --mode server crash that could occur
   if data was being routed to a client at
   high bandwidth at the precise moment that the
   client instance object on the server was being
   deleted.
 * Fixed issue on machines which have epoll.h and
   the epoll_create glibc call defined, but which
   don't actually implement epoll in the kernel.
   OpenVPN will now gracefully fall back to the
   poll API in this case.
 * Fixed Windows bug which would cause the following
   error in a --mode server --dev tap configuration:
   "resource limit WSA_MAXIMUM_WAIT_EVENTS has been
   exceeded".
 * Added CRL (certificate revocation list) management
   scripts to easy-rsa directory (Jon Bendtsen).
 * Do a better job of getting the ifconfig component
   of the options consistency check to work correctly
   when --up-delay is used.
 * De-inlined some functions which were too complex
   to be inlined anyway with gcc.
 * If a --dhcp-option option is pushed to a non-windows
   client, the option will be saved in the client's
   environment before the --up script is called, under
   the name "foreign_option_{n}".
 * Added --learn-address script (see man page) which
   allows for firewall access through the VPN to be
   controlled based on the client common name.
 * In mode --server mode, when a client connects to
   the server, the server will disconnect any
   still-active clients which use the same common
   name.  Use --duplicate-cn flag to revert to
   previous behavior of allowing multiple clients
   to concurrently connect with the same common name.
 
 2004.06.08 -- Version 2.0-beta4
 
 * Fixed issue with beta3 where Win32 service wrapper
   was keying off of old TAP HWID as a dependency.  To
   ensure that the new service wrapper is correctly
   installed, the Windows install script will uninstall
   the old wrapper before installing the new one,
   causing a reset of service properties.
 * Fixed permissions issue on --status output file,
   with default access permissions of owner read/write
   only (default permissions can be changed of course with
   chmod).
 
 2004.06.05 -- Version 2.0-beta3
 
 * More changes to TAP-Win32 driver's INF file which
   affects the placement of the driver in the Windows
   device namespace.  This is done to work around an
   apparent bug in Windows when short HWIDs are used,
   and will also ease the upgrade from 1.x to 2.0 by
   reducing the chances that a reboot will be needed
   on upgrade.  Like beta2, this upgrade will
   delete existing TAP-Win32 interfaces, and reinstall
   a single new interface with default properties.
 * Major rewrite of I/O event wait layer in the style
   of libevent.  This is a precursor to TCP support
   in --mode server.
 * New feature: --status.  Outputs a SIGUSR2-like
   status summary to a given file, updated once
   per n seconds.  The status file is comma delimited
   for easy machine parsing.
 * --ifconfig-pool now remembers common names and
   will try to assign a consistent IP to a given
   common name.  Still to do: persist --ifconfig-pool
   memory across restarts by saving state in file.
 * Fixed bug in event timer queue which could cause
   recurring timer events such as --ping to not
   correctly schedule again after firing.  This in
   turn would cause spurrious ping restarts and possible
   connection outages.  Thanks to Denis Vlasenko for
   tracking this down.
 * Possible fix to reported bug where --daemon argument
   was not printing to syslog correctly after restart.
 * Fixed bug where pulling --route or --dhcp-option
   directives from a server would problematically
   interact with --persist-tun on the client.
 * Updated contrib/multilevel-init.patch (Farkas Levente).
 * Added RPM build option to .spec and .spec.in files
   to optionally disable LZO inclusion (Ian Pilcher).
 * The latest MingW runtime and headers define
   'ssize_t', so a patch is needed (Gisle Vanem).
 
 2004.05.14 -- Version 2.0-beta2
 
 * Fixed signal handling bug in --mode server, where
   SIGHUP and SIGUSR1 were treated as SIGTERM.
 * Changed the TAP-Win32 HWID from "TAP" to "TAPDEV".
   Apparently the larger string may work around
   a problem where the TAP adapter is sometimes missing
   from the network connections panel, especially under
   XP SP2. Also note that installing this upgrade will
   uninstall any pre-existing TAP-Win32 adapters, and then
   install a single new adapter, meaning that old adapter
   properties will be lost.  Thanks to Md5Chap for solving
   this one.
 * For --mode server --dev tap, the options --ifconfig and
   --ifconfig-pool are now optional.  This allows address
   assignment via DHCP or use of a TAP VPN without
   IP support, as has always been possible with 1.x.
 * Fixed bug where --ifconfig may not work correctly on
   Linux 2.2.
 * Added 'local' flag to --redirect-gateway for use on
   networks where both OpenVPN daemons are connected
   to a shared subnet, such as wireless.
 
 2004.05.09 -- Version 2.0-beta1
 
 * Unchanged from test29 except for version number
   upgrade.
 
 2004.05.08 -- Version 2.0-test29
 
 * Modified --dev-node on Windows to accept a TAP-Win32
   GUID name.  In addition, --show-adapters will now
   display the high-level name and GUID of each adapter.
   This is an attempt to work around an issue in Windows
   where sometimes the TAP-Win32 adapter installs correctly
   but has no icon in the network connections control
   panel.  In such cases, being able to specify
   --dev-node {TAP-GUID} can work around the missing icon.
 
 2004.05.07 -- Version 2.0-test28
 
 * Fixed bug which could cause segfault on program
   shutdown if --route and --persist-tun are used
   together.
 
 2004.05.06 -- Version 2.0-test27
 
 * Fixed bug in close_instance() which might cause
   memory to be accessed after it had already been freed.
 * Fixed bug in verify_callback() that might have
   caused uninitialized data to be referenced.
 * --iroute now allows full CIDR subnet routing.
 * In "--mode server --dev tun" usage, source addresses
   on VPN packets coming from a particular client must
   be associated with that client in the OpenVPN internal
   routing table.
 	
 2004.04.28 -- Version 2.0-test26
 
 * Optimized broadcast path in multi-client mode.
 * Added socket buffer size options --rcvbuf & --sndbuf.
 * Configure Linux tun/tap driver to use a more sensible
   txqueuelen default.  Also allow explicit setting
   via --txqueuelen option (Harald Roelle).
 * The --remote option now allows the port number
   to be specified as the second parameter.  If
   unspecified, the port number defaults to the
   --rport value.
 * Multiple --remote options on the client can now be
   specified for load balancing and failover.  The
   --remote-random flag can be used to initially randomize
   the --remote list for basic load balancing.
 * If a remote DNS name resolves to multiple DNS addresses,
   one will be chosen by random as a kind of basic
   load-balancing feature if --remote-random is used.
 * Added --connect-freq option to control maximum
   new connection frequency in multi-client mode.
 * In multi-client mode, all syslog messages associated
   with a specific client now include a client-ID prefix.
 * For Windows, use a gettimeofday() function based
   on QueryPerformanceCounter (Derek Burdick).
 * Fixed bug in interaction between --key-method 2
   and DES ciphers, where dynamic keys would be generated
   with bad parity and then be rejected.
 
 2004.04.17 -- Version 2.0-test24
 
 * Reworked multi-client broadcast handling.
 
 2004.04.13 -- Version 2.0-test23
 	
 * Fixed bug in --dev tun --client-to-client routing.
 * Fixed a potential deadlock in --pull.
 * Fixed a problem with select() usage which could
   cause a repeating sequence of "select : Invalid
   argument (code=22)"
 
 2004.04.11 -- Version 2.0-test22
 
 * Fixed bug where --mode server + --daemon was
   prematurely closing syslog connection.
 * Added support for --redirect-gateway on Mac OS X
   (Jeremy Apple).
 * Minor changes to TAP-Win32 driver based on feedback
   from the NDISTest tool.
 	
 2004.04.11 -- Version 2.0-test21
 
 * Optimizations in multi-client server event loop.
 
 2004.04.10 -- Version 2.0-test20
 
 * --mode server capability now works with either tun
   or tap interfaces.  When used with tap interfaces,
   OpenVPN will internally bridge all client tap
   interfaces with the server tap interface.
 * Connecting clients can now have a client-specific
   configuration on the server, based on the client
   common name embedded in the client certificate.
   See --client-config-dir and --client-connect.
   These options can be used to configure client-specific
   routes.
 * Added an option --client-to-client that enables
   internal client-to-client routing or bridging.
   Otherwise, clients will only "see" the server,
   not other connected clients.
 * Fixed bug in route scheduling which would have caused
   --mode server to not work on Windows in test18
   and test19 with the sample config file.
 * Man page is up to date with all new options.
 * OpenVPN 2.0 release notes on web site updated
   with tap-style tunnel examples.
 
 2004.04.02 -- Version 2.0-test19
 
 * Fixed bug where routes pushed from server were
   not working correctly on Windows clients.
 * Added Mac OS X route patch (Jeremy Apple).
 
 2004.03.30 -- Version 2.0-test18
 
 * Minor fixes + Windows self-install modified
   to use OpenSSL 0.9.7d.
 
 2004.03.29 -- Version 2.0-test17
 
 * Fixed some bugs related to instance timeout and deletion.
 * Extended --push/--pull option to support additional
   option classes.
 
 2004.03.28 -- Version 2.0-test16
 
 * Successful test of --mode udp-server, --push,
   --pull, and --ifconfig-pool with server on
   Linux 2.4 and clients on Linux and Windows.
 
 2004.03.25 -- Version 2.0-test15
 	
 * Implemented hash-table lookup of client instances
   based either on remote UDP address/port or remote
   ifconfig endpoint.
 * Implemented a randomized binary tree based
   scheduler for scalably scheduling a large number
   of client instance events.  Uses the treap
   data structure and node rotation algorithm
   to keep the tree balanced.
 * Initial implementation of ifconfig-pool.
 * Made --key-method 2 the default.
 
 2004.03.20 -- Version 2.0-test14
 
 * Implemented --push and --pull.
 
 2004.03.20 -- Version 2.0-test13
 
 * Reduced struct tls_multi and --single-session
   memory footprint.
 * Modified --single-session flag to be used
   in multi-client UDP server client instances.
 
 2004.03.19 -- Version 2.0-test12
 
 * Added the key multi-client UDP server options,
   --mode, --push, --pull, and --ifconfig-pool.
 * Revamped GC (garbage collection) code to not rely
   on any global data.
 * Modifications to thread.[ch] to allow a more
   flexible thread model.
 
 2004.03.16 -- Version 2.0-test11
 
 * Moved all timer code to interval.h, added new file
   interval.c.
 * Fixed missing include.
 
 2004.03.16 -- Version 2.0-test10
 
 * More TAP-Win32 fixes.
 * Initial debugging and testing of multi.[ch].
 
 2004.03.14 -- Version 2.0-test9
 
 * Branch merge with 1.6-rc3
 * More point-to-multipoint work in multi.[ch].
 * Major TAP-Win32 driver restructuring to use
   NdisMRegisterDevice instead of
   IoCreateDevice/IoCreateSymbolicLink.
 * Changed TAP-Win32 symbolic links to use \DosDevices\Global\
   pathname prefix.
 * In the majority of cases, TAP-Win32 should now be
   able to install and uninstall on Win2K without requiring
   a reboot.
 * TAP-Win32 MAC address can now be explicitly set in the
   adapter advanced properties page.
 
 2004.03.04 -- Version 2.0-test8
 
 * Branch merge with 1.6-rc2.
 
 2004.03.03 -- Version 2.0-test7
 
 * Branch merge with 1.6-rc1.2.
 
 2004.03.02 -- Version 2.0-test6
 
 * Branch merge with 1.6-rc1.
 
 2004.03.02 -- Version 2.0-test5
 
 * Move Socks5 UDP header append/remove to socks.c, and is
   called from forward.c.
 * Moved verify statics from ssl.c into struct tls_session.
 * Wrote multi.[ch] to handle top level of point-to-multipoint
   mode.
 * Wrote some code to allow a struct link_socket in a child context
   to be slaved to the parent context.
 * Broke up packet read and process functions in forward.c
   (from socket or tuntap) into separate functions for read
   and process, so that point-to-point and point-to-multipoint can
   share the same code.
 * Expand TLS control channel to allow the passing of configuration
   commands.
 * Wrote mroute.[ch] to handle internal packet routing for
   point-to-multipoint mode.
 
 2004.02.22 -- Version 2.0-test3
 
 * Initial work on UDP multi-client server.
 * Branch merge of 1.6-beta7
 	
 2004.02.14 -- Version 2.0-test2
 
 * Refactorization of openvpn.c into openvpn.[ch]
   init.[ch] forward.[ch] forward-inline.h
   occ.[ch] occ-inline.h  ping.[ch] ping-inline.h
   sig.[ch].  Created a master per-tunnel
   struct context in openvpn.h.
 * Branch merge of 1.6-beta6.2
 
 2003.11.06 -- Version 2.0-test1
 
 * Initial testbed for 2.0.
 
 2004.05.09 -- Version 1.6.0
 	
 * Unchanged from 1.6-rc4 except for version number
   upgrade.
 
 2004.04.01 -- Version 1.6-rc4
 
 * Made minor customizations to devcon and
   renamed as tapinstall.exe for Windows version.
 * Fixed "storage size of `iv' isn't known" build
   problem on FreeBSD.
 * OpenSSL 0.9.7d bundled with Windows self-install.
 	
 2004.03.13 -- Version 1.6-rc3
 
 * Minor Windows fixes for --ip-win32 dynamic, relating to
   the way the TAP-Win32 driver responds to a DHCP request
   from the Windows DHCP client.
 * The net_gateway environmental variable wasn't being
   set correctly for called scripts (Paul Zuber).
 * Added code to determine the default gateway on FreeBSD,
   allowing the --redirect-gateway option to work
   (Juan Rodriguez Hervella).
 	
 2004.03.04 -- Version 1.6-rc2
 
 * Fixed bug in Windows version where the NetBIOS node-type
   DHCP option might have been passed even if it was not
   specified.
 * Fixed bug in Windows version introduced in 1.6-rc1, where
   DHCP timeout would be set to 0 seconds if --ifconfig option
   was used and --ip-win32 option was not explicitly specified.
 * Added some new --dhcp-option types for Windows version.
 
 2004.03.02 -- Version 1.6-rc1
 
 * For Windows, make "--ip-win32 dynamic" the default.
 * For Windows, make "--route-delay 10" the default
   unless --ip-win32 dynamic is not used or --route-delay
   is explicitly specified.
 * L_TLS mutex could have been left in a locked state
   for certain kinds of TLS errors.
 	
 2004.02.22 -- Version 1.6-beta7
 	
 * Allow scheduling priority increase (--nice) together
   with UID/GID downgrade (--user/--group).
 * Code that causes SIGUSR1 restart on TLS errors in TCP
   mode was not activated in pthread builds.
 * Save the certificate serial number in an environmental
   variable called tls_serial_{n} prior to calling the
   --tls-verify script.  n is the current cert chain level.
 * Added NetBSD IPv6 tunnel capability (also requires
   a kernel patch) (Horst Laschinsky).
 * Fixed bug in checking the return value of the nice()
   function (Ian Pilcher).
 * Bug fix in new FreeBSD IPv6 over TUN code which was
   originally added in 1.6-beta5 (Nathanael Rensen).
 * More Socks5 fixes -- extended the struct frame
   infrastructure to accomodate proxy-based encapsulation
   overhead.
 * Added --dhcp-option to Windows version for setting
   adapter properties such as WINS & DNS servers.
 * Use a default route-delay of 5 seconds when
   --ip-win32 dynamic is specified (only applicable when
   --route-delay is not explicitly specified).
 * Added "log_append" registry variable to control
   whether the OpenVPN service wrapper on Windows
   opens log files in append (log_append="1") or
   truncate (log_append="0") mode.  The default
   is truncate.
 
 2004.02.05 -- Version 1.6-beta6
 
 * UDP over Socks5 fix to accomodate Socks5 encapsulation
   overhead (Christof Meerwald).
 * Minor --ip-win32 dynamic tweaks (use long lease time,
   invalidate existing lease with DHCPNAK).
 
 2004.02.01 -- Version 1.6-beta5
 
 * Added Socks5 proxy support (Christof Meerwald).
 * IPv6 tun support for FreeBSD (Thomas Glanzmann).
 * Special TAP-Win32 debug mode for Windows self-install that was
   enabled in beta4 is now turned off.
 * Added some new Solaris notes to INSTALL (Koen Maris).
 * More work on --ip-win32 dynamic.
 
 2004.01.27 -- Version 1.6-beta4
 
 * For this beta, the Windows self-install is a debug version
   and will run slower -- use only for testing.
 * Reverted the --ip-win32 default back to 'ipapi'
   from 'dynamic'.
 * Added the offset parameter to '--ip-win32 dynamic' which
   can be used to control the address of the masqueraded
   DHCP server which replies to Windows DHCP requests.
 * Added a wait/nowait option to --inetd (nowait can only
   be used with TCP sockets, TLS authentication, and over
   a bridged configuration -- see FAQ for more info)
   (Stefan `Sec` Zehl).
 * Added a build-time capability where TAP-Win32 driver
   debug messages can be output by OpenVPN at --verb 6
   or higher.
 
 2004.01.20 -- Version 1.6-beta2
 
 * Added ./configure --enable-iproute2 flag which
   uses iproute2 instead of route + ifconfig --
   this is necessary for the LEAF Linux distro
   (Martin Hejl).
 * Added renewal-time and rebind-time to set of
   DHCP options returned by the TAP-Win32 driver when
   "--ip-win32 dynamic" is used.
 	
 2004.01.14 -- Version 1.6-beta1
 
 * Fixed --proxy bug that sometimes caused plaintext
   control info generated by the proxy prior to http
   CONNECT method establishment to be incorrectly
   parsed as OpenVPN data.
 * For Windows version, implemented the
   "--ip-win32 dynamic" method and made it the default.
   This method sets the TAP-Win32 adapter IP address
   and netmask by replying to the kernel's DHCP queries.
   See the man page for more detailed info.
 * Added --connect-retry parameter which controls
   the time interval (in seconds) between connect()
   retries when --proto tcp-client is used.  Previously,
   this value was hardcoded to 5 seconds, and still
   defaults as such.
 * --resolv-retry can now be used with a parameter
   of "infinite" to retry indefinitely.
 * Added SSL_CTX_use_certificate_chain_file() to ssl.c
   for support of multi-level certificate chains
   (Sten Kalenda).
 * Fixed --tls-auth incompatibility with 1.4.x and earlier
   versions of OpenVPN when the passphrase file is an
   OpenVPN static key file (as generated by --genkey).
 * Added shell-escape support in config files using
   the backslash character ("\") so that (for example)
   double quotes can be passed to the shell.
 * Added "contrib" subdirectory on tarball, source zip,
   and CVS containing user-submitted contributions.
 * Added an optional patch to the Redhat init script to
   allow the configuration file directory to be a
   multi-level directory hierarchy (Farkas Levente).
   See contrib/multilevel-init.patch
 * Added some scripts and documentation on using
   Linux "fwmark" iptables rules to enable
   fine-grained routing control over the VPN
   (Sean Reifschneider, <jafo@tummy.com>).
   See contrib/openvpn-fwmarkroute-1.00
 
 2003.11.20 -- Version 1.5.0
 
 * Minor documentation changes.
 
 2003.11.04 -- Version 1.5-beta14
 
 * Fixed build problem with ./configure --disable-ssl
   that was reported on Debian woody.
 * Fixed bug where --redirect-gateway could not be used
   together with --resolv-retry.
 
 2003.11.03 -- Version 1.5-beta13
 
 * Added CRL (certificate revocation list) capability using
   --crl-verify option (Stefano Bracalenti).
 * Added --replay-window option for variable replay-protection
   window sizes.
 * Fixed --fragment bug which might have caused certain large
   packets to be sent unfragmented.
 * Modified --secret and --tls-auth to permit different cipher and
   HMAC keys to be used for each data flow direction.  Also
   increased static key file size generated by --genkey from
   1024 to 2048 bits, where 512 bits each are reserved for
   send-HMAC, encrypt, receive-HMAC, and decrypt.  Key file forward
   and backward compatibility is maintained.  See --secret option
   documentation on the man page for more info.
 * Added --tls-remote option (Teemu Kiviniemi).
 * Fixed --tls-cipher documention regarding correct delimiter
   usage (Teemu Kiviniemi).
 * Added --key-method option for selecting alternative data
   channel key negotiation methods.  Method 1 is the default.
   Method 2 has been added (see man page for more info).
 * Added French translation of HOWTO to web site
   (Guillaume Lehmann).
 * Fixed problem caused by late resolver library load on
   certain platforms when --resolv-retry and --chroot are
   used together (Teemu Kiviniemi).
 * In TCP mode, all decryption or TLS errors will abort the current
   connection (this is not done in UDP mode because UDP is
   "connectionless").
 * Fixed a TCP client reconnect bug that only occurs on the
   BSDs, where connect() fails with an invalid argument.  This
   bug was partially (but not completely) fixed in beta7.
 * Added "route_net_gateway" environmental variable which contains
   the pre-existing default gateway address from the routing table
   (there's no standard API for getting the default gateway, so
   right now this feature only works on Windows or Linux).
 * Renamed the "route_default_gateway" enviromental variable to
   "route_vpn_gateway" -- this is the remote VPN endpoint.
 * The special keywords vpn_gateway, net_gateway, and remote_host
   can now be used for the network or gateway components of the
   --route option.  See the man page for more info.
 * Added the --redirect-gateway option to configure the VPN
   as the default gateway (implemented on Linux and Windows only).
 * Added the --http-proxy option with basic authentication
   support for use in TCP client mode.  Successfully tested
   using Squid as the HTTP proxy, with and without authentication.
 
 2003.10.12 -- Version 1.5-beta12
 
 * Fixed Linux-only bug in --mktun and --rmtun which was
   introduced around beta8 or so, which would cause
   an error such as "I don't recognize device tun0 as a
   tun or tap device1".
 * Added --ifconfig-nowarn option to disable options
   consistency warnings about --ifconfig parameters.
 * Don't allow any kind of sequence number backtracking or
   message reordering when in TCP mode.
 * Changed beta naming convention to use '_' (underscore)
   rather than '-' (dash) to pacify rpmbuild.
 	
 2003.10.08 -- Version 1.5-beta11
 
 * Modified code in the Windows version which sets the IP address
   and netmask of the TAP-Win32 adapter using the IP Helper API.
   Most of the changes involve better error recovery when
   the IP Helper API returns an error status.  See the
   manual page entry on --ip-win32 for more info.
 
 2003.10.08 -- Version 1.5-beta10
 
 * Added getpass() function for Windows version so that --askpass
   option works correctly (Stefano Bracalenti).
 * Added reboot advisory to end of Win32 install script.
 * Changed crypto code to use pseudo-random IVs rather than
   carrying forward the IV state from the previous packet.
   This is in response to item 2 in the following document:
   http://www.openssl.org/~bodo/tls-cbc.txt which points
   out weaknesses in TLS's use of the same IV carryforward
   approach.  This change does not break protocol compatibility
   with previous versions of OpenVPN.
 * Made a change to the crypto replay protection code to also
   protect against certain kinds of packet reordering attacks.
   This change does not break protocol compatibility with
   previous versions of OpenVPN.
 * Added --ip-win32 option to provide several choices for
   setting the IP address on the TAP-Win32 adapter.
 * #ifdefed out non-CBC crypto modes by default.
 * Added --up-delay option to delay TUN/TAP open and --up script
   execution until after connection establishment.  This option
   replaces the earlier windows-only option --tap-delay.
   
 2003.10.01 -- Version 1.5-beta9
 
 * Fixed --route-noexec bug where option was not parsed correctly.
 * Complain if --dev tun is specified without --ifconfig on Windows.
 * Fixed bug where TCP connections on windows would sometimes cause
   an assertion failure.
 * Added a new flag to TAP-Win32 advanced properties that allows one
   to set the adapter to be always "connected" even when an OpenVPN
   process doesn't have it open.  The default behavior is to report
   a media status of connected only when an OpenVPN process has the
   adapter open.
 * Rebuilt the Windows self-install distribution with OpenSSL 0.9.7c
   DLLs in response to an OpenSSL security advisory.
 
 2003.09.30 -- Version 1.5-beta8
 
 * Extended the --ifconfig option to work on tap devices as well
   as tun devices.
 * Implemented the --ifconfig option for Windows, by calling the
   netsh tool.
 * By default, do an "arp -d *" on Windows after TAP-Win32 open to
   refresh the MAC cache.  This behaviour can be disabled with
   --no-arp-del.
 * On Windows, allow the --dev-node parameter (which specifies
   the name of the TAP-Win32 adapter) to be omitted in cases where
   there is a single TAP-Win32 adapter on the system which can be
   assumed to be the default.
 * Modified the diagnostic --verb 5 debugging level to print 'R'
   for TCP/UDP read, 'W' for TCP/UDP write, 'r' for TUN/TAP read,
   and 'w' for TUN/TAP write.
 * Conditionalize OpenBSD read_tun and write_tun based on tun or tap
   mode.
 * Added IPv6 tun support to OpenBSD (Thomas Glanzmann).
 * Make the --enable-mtu-dynamic ./configure option enabled by
   default.
 * Deprecated the --mtu-dynamic run-time option, in favor of
   --fragment.
 * DNS names can now be used as --ifconfig parameters.
 * Significant work on TAP-Win32 driver to bring up to SMP standards.
 * On Windows, fixed dangling IRP problem if TAP-Win32 driver is
   unloaded or disabled, while a user-space process has it open.
 * On Windows, if --tun-mtu is not specified, it will be read from
   the TAP-Win32 driver via ioctl.
 * On Windows, added TAP-Win32 driver status info to "F2" keyboard
   signal (only when run from a console window).
 * Added --mssfix option to control TCP MSS size (YANO Hirokuni).
 * Renamed --mtu-dynamic option to --fragment to more accurately
   reflect its function.  Fragment accepts a single parameter which
   is the upper limit on acceptable UDP packet size.
 * Changed default --tun-mtu-extra parameter to 32 from 64.
 * Eliminated reference to malloc.o in configure.ac.
 * Added tun device emulation to the TAP-Win32 driver.
 * Added --route and related options.
 * Added init script for SuSE Linux (Frank Plohmann).
 * Extended option consistency check between peers to function
   in all crypto modes, including static-key and cleartext modes.
   Previously only TLS mode was supported.  Disable with
   --disable-occ.
 * Overall, increased the amount of configuration option sanity
   checking, especially of networking parameters.
 * Added --mtu-test option for empirical MTU measurement.
 * Added Windows-only option --tap-delay to not set the TAP-Win32
   adapter media state to 'connected' until TCP/UDP connection
   establishment with peer.
 * Slightly modified --route/--route-delay semantics so that when
   --route is given without --route-delay, routes are added
   immediately after tun/tap device open.  When --route-delay is
   specified, routes will be added n seconds after connection
   initiation, where n is the --route-delay parameter (which
   can be set to 0).	
 * Made TCP framing error into a non-fatal error that triggers a
   connection reset.
 
 2003.08.28 -- Version 1.5-beta7
 
 * Fixed bug that caused OpenVPN not to respond to exit/restart
   signals when --resolv-retry is used and a local or remote DNS
   name cannot be resolved.
 * Exported a series of environmental variables with useful
   info for scripts.  See man page for more info.  Based
   on a suggestion by Anthony Ciaravalo.
 * Moved TCP/UDP socket bind to a point in the initialization
   before the --up script gets called.  This is desirable
   because (a) a socket bind failure will happen before
   daemonization, allowing an error status code to be returned
   to the shell and (b) the possibility is eliminated of a
   socket bind failure causing the --up script to be run
   but not the --down script.  This change has a side effect
   that --resolv-retry will no longer work with --local.
 * Fixed bug where if an OpenVPN TCP server went down and back
   up again, Solaris or FreeBSD clients would fail to reconnect
   to it.
 * Fixed bug that prevented OpenVPN from being run by
   inetd/xinetd in TCP mode.
 * Added --log and --log-append options for logging messages to
   a file.
 * On Windows, check that the current user is a member of the
   Administrator group before attempting install or uninstall.
 
 2003.08.16 -- Version 1.5-beta6
 
 * Fixed TAP-Win32 driver to properly increment the Rx/Tx count.
 
 2003.08.14 -- Version 1.5-beta5
 
 * Added user-configurability of the TAP-Win32 adapter MTU
   through the adapter advanced properties page.
 * Added Windows Service support.
 * On Windows, added file association and right-clickability
   for .ovpn files (OpenVPN config files).
 
 2003.08.05 -- Version 1.5-beta4
 
 * Extra refinements and error checking added to Windows
   NSIS install script.
 	
 2003.08.05 -- Version 1.5-beta3
 	
 * Added md5.h include to crypto.c to fix build problem on
   OpenBSD.
 * Created a Win32 installer using NSIS.
 * Removed DelService command from TAP-Win32 INF file.  It appears
   to be not necessary and it interfered with the ability to
   uninstall and reinstall the driver without needing to reboot.
 * On Windows version, added "addtap" and "deltapall" batch
   files to add and delete TAP-Win32 adapter instances.
 
 2003.07.31 -- Version 1.5-beta2
 	
 * Renamed INSTALL.w32 to INSTALL-win32.txt and reformatted
   in Windows ASCII so it's easier to click and view.
 * Added postscript and PDF versions of the HOWTO to the web
   site (C R Zamana).
 * Merged Michael Clarke's stability patch into TAP-Win32
   driver which appears to fix the suspend/resume driver bug
   and significantly improve driver stability.
 * Added Christof Meerwald's Media Status patch to the
   TAP-Win32 driver which shows the TAP adapter to be
   disconnected when OpenVPN is not running.
 * Moved socket connect and TCP server listen code to a later
   point in openvpn() function so that the TCP server listen
   state is entered after daemonization.
 * Added keyboard shortcuts to simulate signals in the Windows
   version, see the window title bar for descriptions.
 
 2003.07.24 -- Version 1.5-beta1
 	
 * Added TCP support via the new --proto option.
 * Renamed udp-centric options such as --udp-mtu to
   --link-mtu (old option names preserved for compatibility).
 * Ported to Windows 2000 + XP using mingw and a TAP driver
   derived from the Cipe-Win32 project by Damion K. Wilson.
 * Added --show-adapters flag for windows version.
 * Reworked the SSL/TLS packet acknowledge code to better
   handle certain corner cases.
 * Turned off the default enabling of IP forwarding in the
   sample-scripts/openvpn.init script for Redhat.
   Forwarding can be enabled by users in their --up scripts
   or firewall config.
 * Added --up-restart option based on suggestion from Sean
   Reifschneider.
 * If --dev tap or --dev-type tap is specified, --tun-mtu
   defaults to 1500 and --tun-mtu-extra defaults to 64.
 * Enabled --verb 5 debugging mode that prints 'R' and 'W'
   for each packet read or write on the TCP/UDP socket.
 
 2003.08.04 -- Version 1.4.3
 
 * Added md5.h include to crypto.c
   to fix build problem on OpenBSD.
 
 2003.07.15 -- Version 1.4.2
 
 * Removed adaptive bandwidth from
   --mtu-dynamic -- its absence appears
   to work better than its existence (1.4.1.2).
 * Minor changes to --shaper to fix long
   retransmit timeouts at low bandwidth
   (1.4.1.2).
 * Added LOG_RW flag to openvpn.h for
   debugging (1.4.1.2).
 * Silenced spurious configure warnings (1.4.1.2).
 * Backed out --dev-name patch, modified --dev
   to offer equivalent functionality (1.4.1.4).
 * Added an optional parameter to --daemon and
   --inetd to support the passing of a custom
   program name to the system logger (1.4.1.5).
 * Add compiled-in options to the program title
   (1.4.1.5).
 * Coded the beginnings of a WIN32 port (1.4.1.5).
 * Succeeded in porting to Win32 Mingw environment
   and running loopback tests (1.4.1.6).  Still
   need a kernel driver for full Win32
   functionality.
 * Fixed a bug in error.h where
   HAVE_CPP_VARARG_MACRO_GCC was misspelled.
   This would have caused a significant slowdown
   of OpenVPN when built by compilers that
   lack ISO C99 vararg macros (1.4.1.6).
 * Created an init script for Gentoo Linux
   in ./gentoo directory (1.4.1.6).
 
 2003.05.15 -- Version 1.4.1
 
 * Modified the Linux 2.4 TUN/TAP open code to
   fall back to the 2.2 TUN/TAP interface if the
   open or ioctl fails.
 * Fixed bug when --verb is set to 0 and non-fatal
   socket errors occur, causing 100% CPU utilization.
   Occurs on platorms where
   EXTENDED_SOCKET_ERROR_CAPABILITY is defined,
   such as Linux 2.4.
 * Fixed typo in tun.c that was preventing
   OpenBSD build.
 * Added --enable-mtu-dynamic configure option
   to enable --mtu-dynamic experimental option.
 	
 2003.05.07 -- Version 1.4.0
 
 * Added --replay-persist feature to allow replay
   protection across sessions.
 * Fixed bug where --ifconfig could not be used
   with --tun-mtu.
 * Added --tun-mtu-extra parameter to deal with
   the situation where a read on a TUN/TAP device
   returns more data than the device's MTU size.
 * Fixed bug where some IPv6 support code for
   Linux was not being properly ifdefed out for
   Linux 2.2, causing compile errors.
 * Added OPENVPN_EXIT_STATUS_x codes to
   openvpn.h to control which status value
   openvpn returns to its caller (such as
   a shell or inetd/xinetd) for various conditions.
 * Added OPENVPN_DEBUG_COMMAND_LINE flag to
   openvpn.h to allow debugging in situations
   where stdout, stderr, and syslog cannot be used
   for message output, such as when OpenVPN is
   instantiated by inetd/xinetd.
 * Removed owner-execute permission from file
   created by static key generator (Herbert Xu
   and Alberto Gonzalez Iniesta).
 * Added --passtos option to allow IPv4 TOS bits
   to be passed from TUN/TAP input packets to
   the outgoing UDP socket (Craig Knox).
 * Added code to prevent open socket file descriptors
   from being accessible to called scripts.
 * Added --dev-name option (Christian Lademann).
 * Added --mtu-disc option for manual control
   over MTU options.
 * Show OS MTU value on UDP socket write failures
   (linux only).
 * Numerous build system and portability
   fixes (Matthias Andree).
 * Added better sensing of compiler support for
   variable argument macros, including (a) gcc
   style, (b) ISO C 1999 style, and (c) no support.
 * Removed generated files from CVS.  Note INSTALL
   file for new CVS build commands.
 * Changed certain internal symbol names
   for C standards compliance.
 * Added TUN/TAP open code to cycle dynamically
   through unit numbers until it finds a free
   unit (based on code from Thomas Gielfeldt
   and VTun).
 * Added dynamic MTU and fragmenting infrastructure
   (Experimental).  Rebuild with FRAGMENT_ENABLE
   defined to enable.
 * Minor changes to SSL/TLS negotiation, use
   exponential backoff on retransmits, and use
   a smaller MTU size (note that no protocol
   changes have been made which would break
   compatibility with 1.3.x).
 * Added --enable-strict-options flag
   to ./configure.  This option will cause
   a more strict check for options compatibility
   between peers when SSL/TLS negotiation is used,
   but should only be used when both OpenVPN peers
   are of the same version.
 * Reorganization of debugging levels.
 * Added a workaround in configure.ac for
   default SSL header location on Linux
   to fix RH9 build problem.
 * Fixed potential deadlock when pthread support
   is used on OSes that allocate a small socketpair()
   message buffer.
 * Fixed openvpn.init to be sh compliant
   (Bishop Clark).
 * Changed --daemon to wait until all
   initialization is finished before becoming a
   daemon, for the benefit of initialization
   scripts that want a useful return status from
   the openvpn command.
 * Made openvpn.init script more robust, including
   positive indication of initialization errors
   in the openvpn daemon and better sanity checks.
 * Changed --chroot to wait until initialization
   is finished before calling chroot(), and allow
   the use of --user and --group with --chroot.
 * When syslog logging is enabled (--daemon or
   --inetd), set stdin/stdout/stderr to point
   to /dev/null.
 * For inetd instantiations, dup socket descriptor
   to a >2 value.
 * Fixed bug in verify-cn script, where test would
   incorrectly fail if CN=x was the last component
   of the X509 composite string (Anonymous).
 * Added Markus F.X.J. Oberhumer's special
   license exception to COPYING.
 
 2002.10.23 -- Version 1.3.2
 
 * Added SSL_CTX_set_client_CA_list call
   to follow the canonical form for TLS initialization
   recommended by the OpenSSL docs.  This change allows
   better support for intermediate CAs and has no impact
   on security.
 * Added build-inter script to easy-rsa package, to
   facilitate the generation of intermediate CAs.
 * Ported to NetBSD (Dimitri Goldin).
 * Fixed minor bug in easy-rsa/sign-req.  It refers to
   openssl.cnf file, instead of $KEY_CONFIG, like all
   other scripts (Ernesto Baschny).
 * Added --days 3650 to the root CA generation command
   in the HOWTO to override the woefully small 30 day
   default (Dominik 'Aeneas' Schnitzer).
 * Fixed bug where --ping-restart would sometimes
   not re-resolve remote DNS hostname.
 * Added --tun-ipv6 option and related infrastructure
   support for IPv6 over tun.
 * Added IPv6 over tun support for Linux (Aaron Sethman).
 * Added FreeBSD 4.1.1+ TUN/TAP driver notes to
   INSTALL (Matthias Andree).
 * Added inetd/xinetd support (--inetd) including
   documentation in the HOWTO.
 * Added "Important Note on the use of commercial certificate
   authorities (CAs) with OpenVPN" to HOWTO based on
   issues raised on the openvpn-users list.
 
 2002.07.10 -- Version 1.3.1
 
 * Fixed bug in openvpn.spec and openvpn.init
   which caused RPM upgrade to fail.
 
 2002.07.10 -- Version 1.3.0
 
 * Added --dev-node option to allow explicit selection of
   tun/tap device node.
 * Removed mlockall call from child thread, as it doesn't
   appear to be necessary (child thread inherits mlockall
   state from parent).
 * Added --ping-timer-rem which causes timer for --ping-exit
   and --ping-restart not to run unless we have a remote IP
   address.
 * Added condrestart to openvpn.init and openvpn.spec
   (Bishop Clark).
 * Added --ifconfig case for FreeBSD (Matthias Andree).
 * Call openlog with facility=LOG_DAEMON (Matthias Andree).
 * Changed LOG_INFO messages to LOG_NOTICE.
 * Added warning when key files are group/others accessible.
 * Added --single-session flag for TLS mode.
 * Fixed bug where --writepid would segfault if used with
   an invalid filename.
 * Fixed bug where --ipchange status message was formatted
   incorrectly.
 * Print more concise error message when system() call
   fails.
 * Added --disable-occ option.
 * Added --local, --remote, and --ifconfig options sanity
   check.
 * Changed default UDP MTU to 1300 and TUN/TAP MTU to
   1300.
 * Successfully tested with OpenSSL 0.9.7 Beta 2.
 * Broke out debug level definitions to errlevel.h
 * Minor documentation and web site changes.
 * All changes maintain protocol compatibility
   with OpenVPN versions since 1.1.0, however default
   MTU changes will require setting the MTU explicitly
   by command line option, if you want 1.3.0 to
   communicate with previous versions.
 
 2002.06.12 -- Version 1.2.1
 
 * Added --ping-restart option to restart
   connection on ping timeout using SIGUSR1
   logic (Matthias Andree).
 * Added --persist-tun, --persist-key,
   --persist-local-ip, and --persist-remote-ip
   options for finer-grained control over SIGUSR1
   and --ping-restart restarts.  To
   replicate previous SIGUSR1 functionality,
   use --persist-remote-ip.
 * Changed residual IV fetching code to take
   IV from tail of ciphertext.
 * Added check to make sure that CFB or OFB
   cipher modes are only used with SSL/TLS
   authentication mode, and added a caveat
   to INSTALL.
 * Changed signal handling during initialization
   (including re-initialization during restarts)
   to exit on SIGTERM or SIGINT and ignore other
   signals which would ordinarily be caught.
 * Added --resolv-retry option to allow
   retries on hostname resolution.
 * Expanded the --float option to also
   allow dynamic changes in source port number
   on incoming datagrams.
 * Added --mute option to limit repetitive
   logging of similar message types.
 * Added --group option to downgrade GID
   after initialization.
 * Try to set ifconfig path automatically
   in configure.
 * Added --ifconfig code for Mac OS X
   (Christoph Pfisterer).
 * Moved "Peer Connection Initiated" message
   to --verb level 1.
 * Successfully tested with
   OpenSSL 0.9.7 Beta 1 and AES cipher.
 * Added RPM notes to INSTALL.
 * Added ACX_PTHREAD (from the autoconf
   macro archive) to configure.ac
   to figure out the right pthread
   options for a given platform.
 * Broke out macro definitions from
   configure.ac to acinclude.m4.
 * Minor changes to docs and HOWTO.
 * All changes maintain protocol compatibility
   with OpenVPN versions since 1.1.0.
 
 2002.05.22 -- Version 1.2.0
 
 * Added configuration file support via
   the --config option.
 * Added pthread support to improve latency.
   With pthread support, OpenVPN
   will offload CPU-intensive tasks such as RSA
   key number crunching to a background thread
   to improve tunnel packet forwarding
   latency.  pthread support can be enabled
   with the --enable-pthread configure option.
   Pthread support is currently available
   only for Linux and Solaris.
 * Added --dev-type option so that tun/tap
   device names don't need to begin with
   "tun" or "tap".
 * Added --writepid option to write main
   process ID to a file.
 * Numerous portability fixes to ease
   porting to other OSes including changing
   all network types to uint8_t and uint32_t,
   and not assuming that time_t is 32 bits.
 * Backported to OpenSSL 0.9.5.
 * Ported to Solaris.
 * Finished OpenBSD port except for
   pthread support.
 * Added initialization script:
   sample-scripts/openvpn.init
   (Douglas Keller)
 * Ported to Mac OS X (Christoph Pfisterer).
 * Improved resilience to DoS attacks when
   TLS mode is used without --remote or
   --tls-auth, or when --float is used
   with --remote.  Note however that the best
   defense against DoS attacks in TLS mode
   is to use --tls-auth.
 * Eliminated automake/autoconf dependency
   for non-developers.
 * Ported configure.in to configure.ac
   and autoconf 2.50+.
 * SIGHUP signal now causes OpenVPN to restart
   and re-read command line and or config file,
   in conformance with canonical daemon behaviour.
 * SIGUSR1 now does what SIGHUP did in
   version 1.1.1 and earlier -- close and reopen
   the UDP socket for use when DHCP changes
   host's IP address and preserve most recently
   authenticated peer address without rereading
   config file.
 * SIGUSR2 added -- outputs current statistics,
   including compression statistics.
 * All changes maintain protocol compatibility
   with 1.1.1 and 1.1.0.
 
 2002.04.22 -- Version 1.1.1
 	
 * Added --ifconfig option to automatically configure
   TUN device.
 * Added inactivity disconnect (--inactive
   and --ping-exit options).
 * Added --ping option to keep stateful firewalls
   from timing out.
 * Added sanity check to command line parser to
   err if any TLS options are used in non-TLS mode.
 * Fixed build problem with compiler environments that
   define printf as a macro.
 * Fixed build problem on linux systems that have
   an integrated TUN/TAP driver but lack the persistent
   tunnel feature (TUNSETPERSIST).  Some linux kernels
   >= 2.4.0 and < 2.4.7 fall into this category.
 * Changed all calls to EVP_CipherInit to use explicit
   encrypt/decrypt mode in order to fix problem with
   IDEA-CBC and AES-256-CBC ciphers.
 * Minor changes to control channel transmit limiter
   algorithm to fix problem where TLS control channel
   might not renegotiate within the default 60 second window.
 * Simplified man page examples by taking advantage
   of the new --ifconfig option.
 * Minor changes to configure.in to check more
   rigourously for OpenSSL 0.9.6 or greater.
 * Put back openvpn.spec, eliminated
   openvpn.spec.in.
 * Modified openvpn.spec to reflect new automake-based
   build environment (Bishop Clark).
 * Other documentation changes.
 * Added --test-crypto option for debugging.
 * Added "missing" and "mkinstalldirs" automake
   support files.
 
 
 2002.04.09 -- Version 1.1.0
 
 * Strengthened replay protection and IV handling,
   extending it fully to both static key and
   TLS dynamic key exchange modes.
 * Added --mlock option to disable paging and ensure that key
   material and tunnel data is never paged to disk.
 * Added optional traffic shaping feature to cap the maximum
   data rate of the tunnel.
 * Converted to automake (The Platypus Brothers 2002-04-01).
 * Ported to OpenBSD by Janne Johansson.
 * Added --tun-af-inet option to work around an incompatibility
   between Linux and BSD tun drivers.
 * Sequence number-based replay protection using the
   IPSec sliding window model is now the default,
   disable with --no-replay.
 * Explicit IV is now the default, disable with --no-iv.
 * Disabled all cipher modes except CBC, CFB, and OFB.
 * In CBC mode, use explicit IV and carry forward residuals,
   using IPSec model.
 * In CFB/OFB mode, IV is timestamp, sequence number.
 * Eliminated --packet-id, --timestamp, and max-delta parameter to
   the --tls-auth option as they are now supplanted by improved
   replay code which is enabled by default.
 * Eliminated --rand-iv as it is now obsolete with improved
   IV code.
 * Eliminated --reneg-err option as it increases vulnerability
   to DoS attacks.
 * Added weak key check for DES ciphers.
 * --tls-freq option is no longer specified on the command line,
   instead it now inherits its parameter from the
   --tls-timeout option.
 * Fixed bug that would try to free memory on exit that was
   never malloced if --comp-lzo was not specified.
 * Errata fixed in the man page examples: "test-ca" should be
   "tmp-ca".
 * Updated manual page.
 * Preliminary work in porting to OpenSSL 0.9.7.
 * Changed license to allowing linking with OpenSSL.
 
 2002.03.29 -- Version 1.0.3
 
 * Fixed a problem in configure with library ordering on the
   command line.
 
 2002.03.28 -- Version 1.0.2
 
 * Improved the efficiency of the inner event loop.
 * Fixed a minor bug with timeout handling.
 * Improved the build system to build on RH 6.2 through 7.2.
 * Added an openvpn.spec file for RPM builders (Bishop Clark).
 
 2002.03.23 -- Version 1.0
 
 * Added TLS-based authentication and key exchange.
 * Added gremlin mode to stress test.
 * Wrote man page.
 
 2001.12.26 -- Version 0.91
 
 * Added any choice of cipher or HMAC digest.
 
 2001.5.13 -- Version 0.90
 
 * Initial release.
 * IP tunnel over UDP, with blowfish cipher and SHA1 HMAC signature.